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class="vector-toc-list"> </ul> </li> <li id="toc-North_Korean_advance" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#North_Korean_advance"> <div class="vector-toc-text"> 1.2 North Korean advance </div> </a> <ul id="toc-North_Korean_advance-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-United_Nations_logistics" class="vector-toc-list-item vector-toc-level-1 vector-toc-list-item-expanded"> <a class="vector-toc-link" href="#United_Nations_logistics"> <div class="vector-toc-text"> 2 United Nations logistics </div> </a> <button aria-controls="toc-United_Nations_logistics-sublist" class="cdx-button cdx-button--weight-quiet cdx-button--icon-only vector-toc-toggle"> Toggle United Nations logistics subsection </button> <ul id="toc-United_Nations_logistics-sublist" class="vector-toc-list"> <li id="toc-Challenges" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Challenges"> <div class="vector-toc-text"> 2.1 Challenges </div> </a> <ul id="toc-Challenges-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Air_resupply" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Air_resupply"> <div class="vector-toc-text"> 2.2 Air resupply </div> </a> <ul id="toc-Air_resupply-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Sea_resupply" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Sea_resupply"> <div class="vector-toc-text"> 2.3 Sea resupply </div> </a> <ul id="toc-Sea_resupply-sublist" class="vector-toc-list"> </ul> </li> <li id="toc-Movement_to_the_front_lines" class="vector-toc-list-item vector-toc-level-2"> <a class="vector-toc-link" href="#Movement_to_the_front_lines"> <div class="vector-toc-text"> 2.4 Movement to the front lines </div> </a> <ul id="toc-Movement_to_the_front_lines-sublist" class="vector-toc-list"> </ul> </li> </ul> </li> <li id="toc-North_Korean_logistics" 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navbar-mini"><ul><li class="nv-view"><a href="/wiki/Template:Campaignbox_Pusan_Perimeter" title="Template:Campaignbox Pusan Perimeter"><abbr title="View this template" style="color:inherit">v</abbr></a></li><li class="nv-talk"><a href="/wiki/Template_talk:Campaignbox_Pusan_Perimeter" title="Template talk:Campaignbox Pusan Perimeter"><abbr title="Discuss this template" style="color:inherit">t</abbr></a></li><li class="nv-edit"><a href="/wiki/Special:EditPage/Template:Campaignbox_Pusan_Perimeter" title="Special:EditPage/Template:Campaignbox Pusan Perimeter"><abbr title="Edit this template" style="color:inherit">e</abbr></a></li></ul></div><div id="Battle_of_Pusan_Perimeter" style="font-size:114%;margin:0 4em"><a href="/wiki/Battle_of_Pusan_Perimeter" class="mw-redirect" title="Battle of Pusan Perimeter"> Battle of Pusan Perimeter </a></div></th></tr><tr><td colspan="2" class="navbox-list navbox-odd hlist" style="width:100%;padding:0"><div style="padding:0 0.25em"> <dl><dt>August</dt></dl> <ul><li><a href="/wiki/Battle_of_Masan" title="Battle of Masan">Masan</a></li> <li><a href="/wiki/Bloody_Gulch_massacre" title="Bloody Gulch massacre">Bloody Gulch massacre</a></li> <li><a href="/wiki/Battle_of_Battle_Mountain" title="Battle of Battle Mountain">Battle Mountain</a></li> <li><a href="/wiki/First_Battle_of_Naktong_Bulge" title="First Battle of Naktong Bulge">1st Naktong Bulge</a></li> <li><a href="/wiki/Battle_of_P%27ohang-dong" title="Battle of P'ohang-dong">P'ohang-dong</a></li> <li><a href="/wiki/Battle_of_Taegu" title="Battle of Taegu">Taegu</a></li> <li><a href="/wiki/Battle_of_the_Bowling_Alley" title="Battle of the Bowling Alley">Bowling Alley</a></li> <li><a href="/wiki/Hill_303_massacre" title="Hill 303 massacre">Hill 303 massacre</a></li></ul> <dl><dt>September</dt></dl> <ul><li><a href="/wiki/Great_Naktong_Offensive" title="Great Naktong Offensive">Great Naktong Offensive</a></li> <li><a href="/wiki/Battle_of_Kyongju" title="Battle of Kyongju">Kyongju</a></li> <li><a href="/wiki/Battle_of_Tabu-dong" title="Battle of Tabu-dong">Tabu-dong</a></li> <li><a href="/wiki/Battle_of_Ka-san" title="Battle of Ka-san">Ka-san</a></li> <li><a href="/wiki/Second_Battle_of_Naktong_Bulge" title="Second Battle of Naktong Bulge">2nd Naktong Bulge</a></li> <li><a href="/wiki/Battle_of_Yongsan" title="Battle of Yongsan">Yongsan</a></li> <li><a href="/wiki/Battle_of_Haman" title="Battle of Haman">Haman</a></li> <li><a href="/wiki/Battle_of_Nam_River" title="Battle of Nam River">Nam River</a></li> <li><a href="/wiki/Pusan_Perimeter_offensive" title="Pusan Perimeter offensive">Pusan Perimeter offensive</a></li></ul> <dl><dt>Background</dt></dl> <ul><li><a href="/wiki/Battle_of_Pusan_Perimeter_order_of_battle" class="mw-redirect" title="Battle of Pusan Perimeter order of battle">Order of battle</a></li> <li><a class="mw-selflink selflink">Logistics</a></li></ul> </div></td></tr></tbody></table></div> Logistics in the Battle of Pusan Perimeter (August 4 – September 15, 1950) during the <a href="/wiki/Korean_War" title="Korean War">Korean War</a> played a decisive role in <a href="/wiki/Battle_of_Pusan_Perimeter" class="mw-redirect" title="Battle of Pusan Perimeter">the battle</a>. Efficient <a href="/wiki/Military_logistics" title="Military logistics">logistics</a>, the management of personnel and <a href="/wiki/Materiel" title="Materiel">materiel</a>, supported <a href="/wiki/United_Nations" title="United Nations">United Nations</a> (UN) supply lines while the <a href="/wiki/North_Korea" title="North Korea">North Koreans</a>' routes of supply were steadily reduced and cut off. UN logistics improved throughout the <a href="/wiki/Battle_of_Inchon" title="Battle of Inchon">Battle of Inchon</a> and the defeat of the North Korean army at Busan. UN forces, consisting mostly of troops from the <a href="/wiki/Republic_of_Korea" class="mw-redirect" title="Republic of Korea">Republic of Korea</a> (ROK), the <a href="/wiki/United_States" title="United States">United States</a> (US), and <a href="/wiki/United_Kingdom" title="United Kingdom">United Kingdom</a> (UK), enjoyed overwhelming air and sea superiority during the battle. The UN efficiently procured and transported supplies from a large stockpile of materiel in nearby Japan. In contrast, North Korean logistics were hampered by UN <a href="/wiki/Interdiction" title="Interdiction">interdiction</a> campaigns which slowed the flow of supplies from North Korea to the battle. Though supported logistically by the <a href="/wiki/Soviet_Union" title="Soviet Union">Soviet Union</a> and <a href="/wiki/China" title="China">China</a> during the battle, North Koreans often had difficulties getting their supplies from depots to the front lines, leaving North Korean troops unsupported during several crucial engagements. <meta property="mw:PageProp/toc" /> <div class="mw-heading mw-heading2"><h2 id="Background">Background</h2>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=1" title="Edit section: Background">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Outbreak_of_war">Outbreak of war</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=2" title="Edit section: Outbreak of war">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1236090951">.mw-parser-output .hatnote{font-style:italic}.mw-parser-output div.hatnote{padding-left:1.6em;margin-bottom:0.5em}.mw-parser-output .hatnote i{font-style:normal}.mw-parser-output .hatnote+link+.hatnote{margin-top:-0.5em}@media print{body.ns-0 .mw-parser-output .hatnote{display:none!important}}</style><div role="note" class="hatnote navigation-not-searchable">Main article: <a href="/wiki/Korean_War" title="Korean War">Korean War</a></div> On the night of June 25, 1950, ten divisions of <a href="/wiki/North_Korea" title="North Korea">North Korea</a>'s <a href="/wiki/Korean_People%27s_Army" title="Korean People's Army">Korean People's Army</a> (KPA) launched a full-scale invasion on the nation's neighbor to the south, the <a href="/wiki/Republic_of_Korea" class="mw-redirect" title="Republic of Korea">Republic of Korea</a>. The force of 89,000 men moved in six columns, catching the <a href="/wiki/Republic_of_Korea_Army" title="Republic of Korea Army">Republic of Korea Army</a> by surprise, resulting in a complete rout. The smaller South Korean army suffered from widespread lack of organization and equipment, and it was unprepared for war.<a href="#cite_note-1">[1]</a> Numerically superior, North Korean forces destroyed isolated resistance from the 38,000 South Korean soldiers on the front before it began moving steadily south.<a href="#cite_note-2">[2]</a> Most of South Korea's forces retreated in the face of the invasion. By June 28, the North Koreans had captured South Korea's capital of <a href="/wiki/Seoul" title="Seoul">Seoul</a>, forcing the government and its shattered army to retreat further south.<a href="#cite_note-3">[3]</a> To prevent South Korea's complete collapse, the <a href="/wiki/United_Nations_Security_Council" title="United Nations Security Council">United Nations Security Council</a> voted to send military forces. The United States' <a href="/wiki/United_States_Seventh_Fleet" title="United States Seventh Fleet">Seventh Fleet</a> dispatched <a href="/wiki/Task_Force_77_(U.S._Navy)" class="mw-redirect" title="Task Force 77 (U.S. Navy)">Task Force 77</a>, led by the <a href="/wiki/Fleet_carrier" title="Fleet carrier">fleet carrier</a> <a href="/wiki/USS_Valley_Forge_(CV-45)" title="USS Valley Forge (CV-45)">USS Valley Forge</a>; the <a href="/wiki/United_Kingdom" title="United Kingdom">British</a> <a href="/wiki/Far_East_Fleet" class="mw-redirect" title="Far East Fleet">Far East Fleet</a> also dispatched several ships, including <a href="/wiki/HMS_Triumph_(R16)" title="HMS Triumph (R16)">HMS Triumph</a>, to provide air and naval support.<a href="#cite_note-4">[4]</a> Although the navies blockaded North Korea and launched aircraft to delay the North Korean forces, these efforts alone did not stop the North Korean Army juggernaut on its southern advance.<a href="#cite_note-Malk24-5">[5]</a> To supplement the air support, US President <a href="/wiki/Harry_S._Truman" title="Harry S. Truman">Harry S. Truman</a> ordered ground troops into the country.<a href="#cite_note-Var3-6">[6]</a> Although the <a href="/wiki/Eighth_United_States_Army" class="mw-redirect" title="Eighth United States Army">Eighth United States Army</a>'s <a href="/wiki/US_24th_Infantry_Division" class="mw-redirect" title="US 24th Infantry Division">US 24th Infantry Division</a> was in <a href="/wiki/Japan" title="Japan">Japan</a> and was available to respond to the situation, cuts in military spending after the end of <a href="/wiki/World_War_II" title="World War II">World War II</a> meant that the overall strength of the US military in the <a href="/wiki/Far_East" title="Far East">Far East</a> was limited and the division itself was understrength and operating outmoded equipment. Nevertheless, the division was ordered into Korea.<a href="#cite_note-Var3-6">[6]</a> The 24th Infantry Division was the first US unit sent into Korea with the mission to take the initial "shock" of North Korean advances alongside the South Korean army, delaying much larger North Korean units to buy time to allow UN reinforcements to arrive.<a href="#cite_note-Alexander52-7">[7]</a> The division was consequently alone for several weeks as it attempted to delay the North Koreans while the <a href="/wiki/7th_Infantry_Division_(United_States)" title="7th Infantry Division (United States)">7th Infantry Division</a>, <a href="/wiki/25th_Infantry_Division_(United_States)" title="25th Infantry Division (United States)">25th Infantry Division</a>, <a href="/wiki/1st_Cavalry_Division_(United_States)" title="1st Cavalry Division (United States)">1st Cavalry Division</a>, and other Eighth Army supporting units moved into position.<a href="#cite_note-Alexander52-7">[7]</a> On July 5, during the first battle between American and North Korean forces, advance elements of the 24th Infantry Division were badly defeated at <a href="/wiki/Battle_of_Osan" title="Battle of Osan">Osan</a>.<a href="#cite_note-8">[8]</a> Over the course of the following month, the 24th Infantry Division was repeatedly defeated and forced south by the stronger and more heavily equipped North Koreans.<a href="#cite_note-Var4-9">[9]</a><a href="#cite_note-Alex90-10">[10]</a> During this time heavy fighting occurred around <a href="/wiki/Battle_of_Chochiwon" title="Battle of Chochiwon">Chochiwon</a>, <a href="/wiki/Battle_of_Chonan" title="Battle of Chonan">Chonan</a>, and <a href="/wiki/Battle_of_Pyongtaek" title="Battle of Pyongtaek">Pyongtaek</a><a href="#cite_note-Var4-9">[9]</a> before the 24th Infantry Division made a final stand at <a href="/wiki/Battle_of_Taejon" title="Battle of Taejon">Taejon</a>. Although they were almost completely destroyed in the fighting, the US troops were able to delay North Korean advance until July 20,<a href="#cite_note-Alex105-11">[11]</a> by which time the Pusan Perimeter had been established. With UN units arriving every day, the Eighth Army was able to build up a force of combat troops that were roughly equal to North Korean forces attacking the region.<a href="#cite_note-Fehr103-12">[12]</a> <div class="mw-heading mw-heading3"><h3 id="North_Korean_advance">North Korean advance</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=3" title="Edit section: North Korean advance">edit</a>]</div> With Taejon captured, North Korean forces began the effort of surrounding the Pusan Perimeter from all sides in an attempt to envelop it. The <a href="/wiki/4th_Division_(North_Korea)" title="4th Division (North Korea)">North Korean 4th Infantry Division</a> and the <a href="/wiki/6th_Division_(North_Korea)" title="6th Division (North Korea)">North Korean 6th Infantry Division</a> advanced south in a wide coordinated maneuver that was aimed at the UN's left flank. Advancing on UN positions, they repeatedly forced US and South Korean forces to withdraw.<a href="#cite_note-Apple222-13">[13]</a> Although they were steadily pushed back, South Korean forces increased their resistance further south in an effort to delay North Korean units as much as possible. North and South Korean units sparred for control of several cities, inflicting heavy casualties on one another. The Republic of Korea Army forces defended <a href="/wiki/Yeongdeok" class="mw-redirect" title="Yeongdeok">Yongdok</a> fiercely before being forced back. They also performed well in the <a href="/wiki/Battle_of_Andong" title="Battle of Andong">Battle of Andong</a>, where they were successful in repelling North Korean advances.<a href="#cite_note-Catch22-14">[14]</a> In the west, US forces were pushed back repeatedly before finally halting the North Korean advance. Forces from the 3rd Battalion, <a href="/wiki/29th_Infantry_Regiment_(United_States)" title="29th Infantry Regiment (United States)">29th Infantry Regiment</a>, newly arrived in the country, were wiped out at <a href="/wiki/Hadong" class="mw-redirect" title="Hadong">Hadong</a> in a <a href="/wiki/Hadong_Ambush" title="Hadong Ambush">coordinated ambush</a> by North Korean forces on July 27, leaving open a pass to the Busan area.<a href="#cite_note-Apple221-15">[15]</a><a href="#cite_note-16">[16]</a> Soon after, Chinju to the west was taken, pushing the 19th Infantry Regiment back and leaving routes to the Pusan open for North Korean forces.<a href="#cite_note-Catch24-17">[17]</a> US units were subsequently able to defeat and push back the North Koreans on the flank in the <a href="/wiki/Battle_of_the_Notch" title="Battle of the Notch">Battle of the Notch</a> on August 2. Suffering mounting losses, the North Korean force on the west flank withdrew for several days to re-equip and receive reinforcements. This granted both sides several days of reprieve to prepare for the attack on the Pusan Perimeter.<a href="#cite_note-Catch25-18">[18]</a><a href="#cite_note-19">[19]</a> <div class="mw-heading mw-heading2"><h2 id="United_Nations_logistics">United Nations logistics</h2>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=4" title="Edit section: United Nations logistics">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pier_2_at_Pusan.jpg" class="mw-file-description"><img alt="A pier at the edge of a large city" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/a2/Pier_2_at_Pusan.jpg/220px-Pier_2_at_Pusan.jpg" decoding="async" width="220" height="243" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/a/a2/Pier_2_at_Pusan.jpg 1.5x" data-file-width="300" data-file-height="331" /></a><figcaption>Pusan harbor, where the majority of UN supplies were processed, in 1950.</figcaption></figure> On July 1, the <a href="/w/index.php?title=US_Far_East_Command&action=edit&redlink=1" class="new" title="US Far East Command (page does not exist)">US Far East Command</a> directed the <a href="/wiki/Eighth_United_States_Army" class="mw-redirect" title="Eighth United States Army">Eighth United States Army</a> to assume responsibility for all logistical support of the <a href="/wiki/United_Nations_Command_(Korea)" class="mw-redirect" title="United Nations Command (Korea)">United Nations Command</a> (UNC) in Korea.<a href="#cite_note-G60-20">[20]</a> This included the <a href="/wiki/ROK_Army" class="mw-redirect" title="ROK Army">ROK Army</a>, <a href="/wiki/US_Army" class="mw-redirect" title="US Army">US Army</a> and <a href="/wiki/British_Army" title="British Army">British Army</a> forces operating in Korea. It also included support for the ships of Australia, Canada, New Zealand and the <a href="/wiki/Netherlands" title="Netherlands">Netherlands</a> which were also contributing to the effort. When the Eighth Army became operational in Korea, this logistical function was assumed by Eighth Army Rear which remained behind in <a href="/wiki/Yokohama" title="Yokohama">Yokohama</a>, <a href="/wiki/Japan" title="Japan">Japan</a>.<a href="#cite_note-Apple114-21">[21]</a> This dual role of the Eighth Army—that of combat in Korea and of logistical support for all troops fighting there—led to the designation of that part of the army in Korea as Eighth United States Army in Korea.<a href="#cite_note-G61-22">[22]</a> This situation existed until August 25.<a href="#cite_note-Apple114-21">[21]</a> On that date the Far East Command activated the <a href="/w/index.php?title=Japan_Logistical_Command&action=edit&redlink=1" class="new" title="Japan Logistical Command (page does not exist)">Japan Logistical Command</a> with <a href="/wiki/US_Major_General" class="mw-redirect" title="US Major General">Major General</a> <a href="/wiki/Walter_L._Weible" class="mw-redirect" title="Walter L. Weible">Walter L. Weible</a> in command. It took over the logistical duties previously held by Eighth Army Rear.<a href="#cite_note-G60-20">[20]</a><a href="#cite_note-Apple114-21">[21]</a> It also assumed responsibility of the movement of refugees and <a href="/wiki/Prisoners_of_war" class="mw-redirect" title="Prisoners of war">prisoners of war</a>.<a href="#cite_note-G62-23">[23]</a> The supplies needed to support the American and South Korean armies came through the United States and Japan.<a href="#cite_note-Apple114-21">[21]</a> Whatever could be obtained from stocks in Japan or procured from Japanese manufacturers was obtained there.<a href="#cite_note-G59-24">[24]</a> In early July 1950, Japanese manufacturers began making <a href="/wiki/Antitank_mine" class="mw-redirect" title="Antitank mine">antitank mines</a> and on July 18 a shipment of 3,000 of them arrived by boat at <a href="/wiki/Busan" title="Busan">Busan</a>.<a href="#cite_note-Apple114-21">[21]</a> The equipment and ordnance supplies that was available to the United States forces in Korea in the first months of the war was largely due to the "roll-up" plan of the Far East Command which had been in effect for some time before the outbreak of hostilities.<a href="#cite_note-G58-25">[25]</a> It called for the reclamation of ordnance items from World War II in the US Pacific island outposts and their repair or reconstruction in Japan. This plan had been conceived and started in 1948 by <a href="/wiki/US_Brigadier_General" class="mw-redirect" title="US Brigadier General">Brigadier General</a> <a href="/w/index.php?title=Urban_Niblo&action=edit&redlink=1" class="new" title="Urban Niblo (page does not exist)">Urban Niblo</a>, the senior <a href="/wiki/United_States_Army_Ordnance_Corps" title="United States Army Ordnance Corps">Ordnance</a> Officer of the Far East Command. During July and August 1950 an average of 4,000 automotive vehicles cleared through the ordnance repair shops each month; in the year after the outbreak of the Korean War more than 46,000 automotive vehicles were repaired or rebuilt in Japan.<a href="#cite_note-Apple114-21">[21]</a> <div class="mw-heading mw-heading3"><h3 id="Challenges">Challenges</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=5" title="Edit section: Challenges">edit</a>]</div> The re-equipping of the ROK Army presented the UN forces with a large logistical problem in July.<a href="#cite_note-G67-26">[26]</a> To meet part of the requirements, the US command contracted Japanese manufacturers in August to produce 68,000 vehicles for the ROK Army, mostly cargo and dump trucks, with first deliveries to be made in September.<a href="#cite_note-Apple261-27">[27]</a> However, the largest challenge faced by UN forces was a shortage of ammunition. At the outbreak of the war and up until the Pusan Perimeter engagements, the UNC's forces had to rely mainly upon the stock of World War II surplus ammunition. Much of this malfunctioned or no longer worked, indeed in some cases up to 60 percent did not work,<a href="#cite_note-Apple115-28">[28]</a> and as a result ammunition, particularly for <a href="/wiki/Crew-served_weapon" title="Crew-served weapon">crew-served weapons</a>, was frequently in short supply.<a href="#cite_note-Apple370-29">[29]</a> From the outset, <a href="/wiki/High-explosive_anti-tank" title="High-explosive anti-tank">high-explosive anti-tank</a> (HEAT) ammunition was particularly scarce, but this changed as US and Japanese manufacturers increased production to meet wartime needs,<a href="#cite_note-30">[30]</a> as a part of the Far East Command's "Operation Rebuild". By August 1950 this operation had assumed gigantic proportions and before the end of 1950 it had expanded to employ 19,908 people in eight Japanese shops.<a href="#cite_note-Apple377-31">[31]</a> Through these efforts, UNC logistics situations improved over time, but nevertheless ammunition remained in short supply for much of the war.<a href="#cite_note-G57-32">[32]</a> Another issue that strained the UN logistics system was the lack of a previously drafted resupply plan. Consumption rates differed among the various units and as a result of a lack of coordination, some UN units faced supply shortages when other units would request more material than they actually needed.<a href="#cite_note-G68-33">[33]</a> In order to rectify this situation UN logisticians were forced to hastily create a plan as the need arose.<a href="#cite_note-G66-34">[34]</a> The lack of armor available was also a serious issue of the UNC. In order to meet the demand, a variety of armored old platforms were hastily rebuilt and modified for movement into the Pusan Perimeter. <a href="/wiki/M4A3_Sherman" class="mw-redirect" title="M4A3 Sherman">M4A3 Sherman</a> <a href="/wiki/Medium_tank" title="Medium tank">medium tanks</a> (preferably the most advanced model, the M4A3E8 (76)W HVSS Sherman) from World War II were pulled from stocks and rebuilt for use in Korea. <a href="/wiki/M3_Half-track" class="mw-redirect" title="M3 Half-track">M15A1 Half-tracks</a> were also rebuilt and modified for use in Korea.<a href="#cite_note-Apple116-35">[35]</a> During early engagements, the <a href="/wiki/M24_Chaffee" title="M24 Chaffee">M24 Chaffee</a> <a href="/wiki/Light_tank" title="Light tank">light tank</a> was the main armored vehicle used by the Americans because it was most readily available and most combat-ready; nevertheless, it performed poorly against heavier North Korean armor.<a href="#cite_note-Apple90-36">[36]</a> All of these weapons had been used in World War II and were considered in poor condition.<a href="#cite_note-Apple50-37">[37]</a> The appearance of the North Korean <a href="/wiki/T-34_tank" class="mw-redirect" title="T-34 tank">T-34 tanks</a> forced the US to move large numbers of heavier, more powerful tanks into the battle. During August, six tank battalions, with around 69 tanks each, arrived at Pusan. By the end of the month there were more than 500 UN tanks assembled there. Most were M4A3E8 Shermans, and the bigger <a href="/wiki/M26_Pershing" title="M26 Pershing">M26 Pershing</a> <a href="/wiki/Heavy_tank" title="Heavy tank">heavy tanks</a>,<a href="#cite_note-Apple380-38">[38]</a> although a limited number of the new <a href="/wiki/M46_Patton" title="M46 Patton">M46 Patton</a> tanks were also moved into the perimeter.<a href="#cite_note-Apple381-39">[39]</a> On July 9, the <a href="/wiki/US_2nd_Infantry_Division" class="mw-redirect" title="US 2nd Infantry Division">US 2nd Infantry Division</a>, with several armor and antiaircraft artillery units, was ordered to proceed to the Far East. The next day, MacArthur requested that the 2nd Division be brought to full war strength, if possible, without delaying its departure. He also reiterated his need of the units required to bring the four infantry divisions already in the Far East to full war strength. He detailed these as four heavy tank battalions, 12 heavy tank companies, 11 infantry battalions, 11 field artillery battalions, and four antiaircraft automatic weapons battalions per division.<a href="#cite_note-Apple119-40">[40]</a> By August 7, the <a href="/wiki/US_9th_Infantry_Regiment" class="mw-redirect" title="US 9th Infantry Regiment">US 9th Infantry Regiment</a> was operational in Korea, and had been sent to the Naktong Bulge area. However it would be the end of the month before the rest of the 2nd Infantry Division arrived in Korea.<a href="#cite_note-Apple298-41">[41]</a> After World War II, the Army developed the <a href="/wiki/Mobile_Army_Surgical_Hospital" title="Mobile Army Surgical Hospital">Mobile Army Surgical Hospital</a> (MASH) concept from experiences in the <a href="/wiki/European_Theater_(World_War_II)" class="mw-redirect" title="European Theater (World War II)">European Theater</a>. The US Army sought a highly mobile hospital unit which could be as close to the fighting as possible to increase the survival rate of casualties. These 60-bed, 124-man units would act as mobile hospitals for the treatment of the wounded. By the beginning of the hostilities in Korea, all MASH units were undermanned and the difficult terrain in Korea prevented easy transport, making it very difficult for the MASH units to operate in the Pusan Perimeter battle. The 8055th MASH was the first such unit to arrive in Korea, being assigned to the 24th Infantry Division on July 9.<a href="#cite_note-42">[42]</a> Two more hospitals, the 8063rd and 8067th, would join the UN forces in the Pusan Perimeter fighting. The MASH units were routinely overwhelmed with patients due to shortages of transport, often receiving between 150 and 200 per day, although sometimes the number was high as 400. The units operated on men that were too critical to be transported. Those who could be moved or could not be treated in the MASH were taken by air or sea to US Army hospitals in Japan depending on the severity of their injuries.<a href="#cite_note-43">[43]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Tank_on_Crane.jpg" class="mw-file-description"><img alt="A crane hoisting a tank into a boat" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Tank_on_Crane.jpg/220px-Tank_on_Crane.jpg" decoding="async" width="220" height="275" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/Tank_on_Crane.jpg/330px-Tank_on_Crane.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/Tank_on_Crane.jpg/440px-Tank_on_Crane.jpg 2x" data-file-width="2400" data-file-height="3000" /></a><figcaption>A US <a href="/wiki/M4_Sherman" title="M4 Sherman">M4 Sherman</a> tank being loaded into a boat at a California port, for movement to Pusan, 1950.</figcaption></figure> Sustenance for the UN troops in Korea was among the other logistical challenges confronting the UN in the early days of the war. There were no <a href="/wiki/C_ration" class="mw-redirect" title="C ration">C rations</a> in Korea and only a small reserve in Japan at the outbreak of the war. The <a href="/wiki/Quartermaster_General" class="mw-redirect" title="Quartermaster General">Quartermaster General</a> of the United States Army immediately began moving all available C rations and 5-in-1 <a href="/wiki/B_rations" class="mw-redirect" title="B rations">B rations</a> from the United States to the Far East. Field rations at first were largely the less nutritious and palatable World War II <a href="/wiki/K_ration" class="mw-redirect" title="K ration">K rations</a>.<a href="#cite_note-Apple115-28">[28]</a> The UN had to rely on much of the US stock of World War II-era material for much of this phase of the war.<a href="#cite_note-G58-25">[25]</a> Provisioning of the ROK troops was an equally important and difficult problem. The regular issue ration to ROK troops was <a href="/wiki/Rice" title="Rice">rice</a> or <a href="/wiki/Barley" title="Barley">barley</a> and fish. It consisted of about 29 ounces (820 g) of rice or barley, one half pound of <a href="/wiki/Biscuit" title="Biscuit">biscuit</a>, and one half pound of canned fish with spices. Often the cooked rice, made into balls and wrapped in <a href="/wiki/Cabbage" title="Cabbage">cabbage</a> leaves, was sour when it reached the combat troops on the line, and frequently it did not arrive at all. Occasionally, local purchase of foods on a basis of 200 Won (US$0.05) per day per man supplemented the issued ration. An improved ROK ration consisting of three menus, one for each daily meal, was ready in September 1950. It provided 3,210 <a href="/wiki/Calorie" title="Calorie">calories</a>, weighed 2.3 pounds (1.0 kg), and consisted of rice starch, biscuits, <a href="/wiki/Tteok" title="Tteok">rice cake</a>, <a href="/wiki/Peas" class="mw-redirect" title="Peas">peas</a>, <a href="/wiki/Kelp" title="Kelp">kelp</a>, fish, <a href="/wiki/Chewing_gum" title="Chewing gum">chewing gum</a>, and <a href="/wiki/Condiments" class="mw-redirect" title="Condiments">condiments</a>, and was packed in a waterproofed bag. With slight changes, this ration was found acceptable to the ROK troops and quickly put into production. It became the standard ration for them during the first year of the war.<a href="#cite_note-Apple115-28">[28]</a> <div class="mw-heading mw-heading3"><h3 id="Air_resupply">Air resupply</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=6" title="Edit section: Air resupply">edit</a>]</div> An emergency airlift of critically needed items began almost immediately from the United States to the Far East. The <a href="/wiki/Military_Air_Transport_Service" title="Military Air Transport Service">Military Air Transport Service</a> (MATS), Pacific Division, expanded rapidly after the outbreak of the war. The Pacific airlift was further expanded by the charter of civil airlines planes. The <a href="/wiki/Canadian_Government" class="mw-redirect" title="Canadian Government">Canadian Government</a> lent the United Nations a <a href="/wiki/Royal_Canadian_Air_Force" title="Royal Canadian Air Force">Royal Canadian Air Force</a> squadron of six transports, while the <a href="/wiki/Belgium" title="Belgium">Belgian</a> Government added several <a href="/wiki/DC-4" class="mw-redirect" title="DC-4">DC-4s</a> to the effort. Altogether, the fleet of about 60 four-engine transport planes operating across the Pacific before June 25, 1950, was quickly expanded to approximately 250. In addition to these, there were MATS <a href="/wiki/C-74_Globemaster" class="mw-redirect" title="C-74 Globemaster">C-74 Globemaster</a> and <a href="/wiki/C-97_Stratofreighter" class="mw-redirect" title="C-97 Stratofreighter">C-97 Stratofreighter</a> planes operating between the United States and <a href="/wiki/Hawaii" title="Hawaii">Hawaii</a>.<a href="#cite_note-Apple115-28">[28]</a> <figure typeof="mw:File/Thumb"><a href="/wiki/File:Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight,_1952_(021001-O-9999G-016).jpg" class="mw-file-description"><img alt="A stocky, unarmed military aircraft in flight" src="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg/250px-Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg" decoding="async" width="250" height="193" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg/375px-Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/a/ae/Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg/500px-Fairchild_C-119B_of_the_314th_Troop_Carrier_Group_in_flight%2C_1952_%28021001-O-9999G-016%29.jpg 2x" data-file-width="3113" data-file-height="2400" /></a><figcaption>The <a href="/wiki/C-119_Flying_Boxcar" class="mw-redirect" title="C-119 Flying Boxcar">C-119 Flying Boxcar</a> was a US aircraft used extensively to airlift supplies and men to the Pusan Perimeter.</figcaption></figure> The Pacific airlift to Korea operated from the United States over three routes. These were commonly known as the "Great Circle" by pilots. One route left from <a href="/wiki/McChord_Air_Force_Base" class="mw-redirect" title="McChord Air Force Base">McChord Air Force Base</a> in <a href="/wiki/Tacoma,_Washington" title="Tacoma, Washington">Tacoma, Washington</a>, and transited through <a href="/wiki/Anchorage,_Alaska" title="Anchorage, Alaska">Anchorage, Alaska</a>, and <a href="/wiki/Shemya" title="Shemya">Shemya</a> in the <a href="/wiki/Aleutians" class="mw-redirect" title="Aleutians">Aleutians</a> before finishing at <a href="/wiki/Tokyo" title="Tokyo">Tokyo</a>. This represented a distance of 5,688 miles (9,154 km) and a flying time of between 30 and 33 hours. A second route was the Mid-Pacific. This departed from <a href="/wiki/Travis_Air_Force_Base" title="Travis Air Force Base">Travis Air Force Base</a> near <a href="/wiki/San_Francisco,_California" class="mw-redirect" title="San Francisco, California">San Francisco, California</a>, and passed through <a href="/wiki/Honolulu" title="Honolulu">Honolulu</a> and <a href="/wiki/Wake_Island" title="Wake Island">Wake Island</a> before arriving in Tokyo; the trip was 6,718 miles (10,812 km) and took 34 hours to complete. A third route was from California through Honolulu, and <a href="/wiki/Johnston_Island" class="mw-redirect" title="Johnston Island">Johnston</a>, <a href="/wiki/Kwajalein" class="mw-redirect" title="Kwajalein">Kwajalein</a>, and <a href="/wiki/Guam" title="Guam">Guam</a> Islands to Tokyo: a distance of about 8,000 miles (13,000 km) and a flying time of 40 hours. The airlift moved about 106 tonnes (104 long tons; 117 short tons) a day in July 1950. From Japan most of the air shipments to Korea were staged at <a href="/wiki/Ashiya,_Fukuoka" title="Ashiya, Fukuoka">Ashiya</a> or at the nearby secondary airfields of <a href="/wiki/Itazuke_Air_Base" class="mw-redirect" title="Itazuke Air Base">Itazuke Air Base</a> and <a href="/wiki/Brady_Air_Base" class="mw-redirect" title="Brady Air Base">Brady Air Base</a>.<a href="#cite_note-Apple115-28">[28]</a> The consumption of aviation gasoline during combat and resupply operations was so great in the early phase of the war, taxing the very limited supply available in the Far East, that it became one of the more serious logistical problems facing UN planners. Ocean tankers could rarely keep pace with the rate of consumption. Although the situation never forced the UN to halt its air operations, on several occasion the situation became quite dire, and was only rectified by the rapid procurement of supplies from Japan. On a number of occasions throughout the war, the demand of military consumption had the effect of leaving Japanese gas stations with no fuel to sell to the public.<a href="#cite_note-Apple257-44">[44]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Fuel_at_Pusan.jpg" class="mw-file-description"><img alt="Several barrels being lifted off a ship by a crane" src="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Fuel_at_Pusan.jpg/220px-Fuel_at_Pusan.jpg" decoding="async" width="220" height="275" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Fuel_at_Pusan.jpg/330px-Fuel_at_Pusan.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/7/7a/Fuel_at_Pusan.jpg/440px-Fuel_at_Pusan.jpg 2x" data-file-width="2400" data-file-height="3000" /></a><figcaption>Fuel unloaded at Pusan. Gasoline shortages remained a serious logistical challenge for UN forces at Pusan.</figcaption></figure> The airlift of critically needed items from the United States tapered off at the end of July as surface transportation began to meet requirements. Some items such as the new 3.5-inch rocket were still being carried largely by airlift, 900 of them being scheduled daily for air delivery to Korea during August. The new 5-inch "<a href="/wiki/Shaped_charge" title="Shaped charge">shaped charge</a>" rockets for Navy fighter planes, developed at the Navy's <a href="/wiki/Inyokern,_California" title="Inyokern, California">Inyokern, California</a>, Ordnance Test Station, were at first delivered to Korea entirely by air. On July 29, a special Air Force plane picked up the first 200 warheads from Inyokern for delivery to the Far East.<a href="#cite_note-Apple260-45">[45]</a> After the first weeks of the war, steps were taken to reduce the necessity for the large number of airlifts to Korea from Japan. By July 15, Eighth Army was provided a daily ferry service from the <a href="/wiki/Hakata-ku,_Fukuoka" title="Hakata-ku, Fukuoka">Hakata</a>-<a href="/wiki/Moji-ku,_Kitaky%C5%ABsh%C5%AB" title="Moji-ku, Kitakyūshū">Moji</a> area to Pusan, along with fast express trains from the Tokyo–Yokohama area. Accordingly, a <a href="/wiki/Red_Ball_Express" title="Red Ball Express">Red Ball Express</a>-type system was organized. It had a daily capacity of 300 tonnes (300 long tons; 330 short tons) of items and supplies that were critically needed in Korea. The Red Ball made the run from Yokohama to <a href="/wiki/Sasebo,_Nagasaki" class="mw-redirect" title="Sasebo, Nagasaki">Sasebo</a> in a little more than 30 hours, and to Pusan in a total of about 53 hours. The first Red Ball Express train with high priority cargo left Yokohama at 1330 on July 23. Regular daily runs became effective two days later. The schedule called for the Red Ball to depart Yokohama at 2330 nightly and arrive at Sasebo at 0542 the next morning. From there, the cargo would be transferred directly from the train to a ship. Ship departure was scheduled for 1330 daily and arrival at Pusan at 0400 the next morning.<a href="#cite_note-Apple260-45">[45]</a> The daily rail and water Red Ball Express from Yokohama to Sasebo to Busan began on July 23. By August it was operating with increased efficiency, demonstrating that it could promptly deliver any supplies available in Japan to Korea. On August 5, for example, it delivered 308 tonnes; on August 9, 403 tonnes; on August 22, 574 tonnes; and on August 25, 949 tonnes. The success of the Red Ball Express cut down the amount of airlift tonnage. This fell from 85 tonnes on July 31 to 49 tonnes on August 6. The express eliminated the need for nearly all airlift of supplies to Korea from Japan. It delivered supplies to Korea in an average time of 60–70 hours, while the airlift delivery varied from 12 hours to 5 days. The Red Ball delivery was not only more cost effective, it was more consistent and reliable.<a href="#cite_note-Apple380-38">[38]</a> The drop in air delivery to Korea caused Major General <a href="/wiki/Earle_E._Partridge" title="Earle E. Partridge">Earle E. Partridge</a>, commanding the Far East Air Forces, to complain on August 10 that the Army was not fully using the airlift's 200 tonne daily capacity. That day, Eighth Army ordered curtailment of delivery by the Red Ball Express and increased use of the airlift to its maximum capacity. The reason given for this action was a sudden apprehension that the port of Pusan could not process the flow of water-borne supplies in a timely manner. The next day, upon Partridge's suggestion, two 2½-ton trucks were airlifted in a <a href="/wiki/C-119" class="mw-redirect" title="C-119">C-119</a> from <a href="/wiki/Tachikawa_Air_Base" class="mw-redirect" title="Tachikawa Air Base">Tachikawa Air Base</a> in Japan to Taegu. The Air Force planned to airlift two trucks daily in this manner. As a result, on August 12, Eighth Army ordered the Red Ball Express be discontinued August 15 except on Tuesday and Friday of each week when it would carry cargo that was considered too difficult for the planes to handle. Under this arrangement airlift tonnage greatly increased. On August 16, transport planes carried 324 tonnes of cargo and 595 passengers; on August 19, 160 tonnes of cargo and 381 passengers; on 28 August, 398 tonnes of cargo and 343 passengers; and, on August 29, 326 tonnes of cargo and 347 passengers.<a href="#cite_note-Apple380-38">[38]</a> <div class="mw-heading mw-heading3"><h3 id="Sea_resupply">Sea resupply</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=7" title="Edit section: Sea resupply">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pusan_dock.jpg" class="mw-file-description"><img alt="Supply ships sit at a dock" src="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Pusan_dock.jpg/220px-Pusan_dock.jpg" decoding="async" width="220" height="154" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Pusan_dock.jpg/330px-Pusan_dock.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/8/8f/Pusan_dock.jpg/440px-Pusan_dock.jpg 2x" data-file-width="600" data-file-height="420" /></a><figcaption>US ships unload cargo at Pusan port, 1950.</figcaption></figure> Most of the resupply by sea was conducted by cargo ships of the US Army and US Navy.<a href="#cite_note-G69-46">[46]</a> The massive demand for ships forced the UN Command to charter private ships and bring ships out of the <a href="/wiki/Reserve_fleet" title="Reserve fleet">reserve fleet</a> to augment the military vessels in service.<a href="#cite_note-G70-47">[47]</a> The UN had a major advantage in its sealift operations in that the most developed port in Korea was Pusan which was at the southeastern tip of the peninsula. Pusan was the only port in South Korea that had dock facilities large enough to handle a sizable amount of cargo.<a href="#cite_note-Apple116-35">[35]</a> Its four piers and intervening quays could berth 24 or more deepwater ships,<a href="#cite_note-G71-48">[48]</a> and its beaches provided space for the unloading of 14 <a href="/wiki/Landing_Ship_Tank" class="mw-redirect" title="Landing Ship Tank">Landing Ship Tank</a> (LST) vessels, giving the port a potential capacity of 45,000 tonnes (44,000 long tons; 50,000 short tons) daily. Seldom, however, did the daily discharge of cargo exceed 14,000 tonnes (14,000 long tons; 15,000 short tons) because of a lack of skilled labor, large cranes, rail cars, and trucks.<a href="#cite_note-Apple116-35">[35]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:60-Ton_Crane_at_Pusan.jpg" class="mw-file-description"><img alt="A large crane being towed by a boat in the water" src="//upload.wikimedia.org/wikipedia/commons/thumb/d/d1/60-Ton_Crane_at_Pusan.jpg/220px-60-Ton_Crane_at_Pusan.jpg" decoding="async" width="220" height="249" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/d/d1/60-Ton_Crane_at_Pusan.jpg 1.5x" data-file-width="300" data-file-height="340" /></a><figcaption>A 60-ton crane for offloading supplies is towed to Pusan, 1950.</figcaption></figure> The distance in nautical miles from the principal Japanese ports to Pusan varied depending on which Japanese port ships embarked from. It was 110 nautical miles (200 km; 130 mi) from <a href="/wiki/Fukuoka" title="Fukuoka">Fukuoka</a>, 123 nautical miles (228 km; 142 mi) from <a href="/wiki/Moji-ku,_Kitaky%C5%ABsh%C5%AB" title="Moji-ku, Kitakyūshū">Moji</a>, 130 nautical miles (240 km; 150 mi) from <a href="/wiki/Sasebo,_Nagasaki" class="mw-redirect" title="Sasebo, Nagasaki">Sasebo</a>, 361 nautical miles (669 km; 415 mi) from <a href="/wiki/Kobe" title="Kobe">Kobe</a>, and 900 nautical miles (1,700 km; 1,000 mi) from <a href="/wiki/Yokohama" title="Yokohama">Yokohama</a> via the <a href="/wiki/Bungo-Suido_strait" class="mw-redirect" title="Bungo-Suido strait">Bungo-Suido strait</a>. The sea trip from the west coast of the United States to Pusan for personnel movement required about 16 days; the trip for heavy equipment and supplies on slower shipping schedules took longer.<a href="#cite_note-Apple116-35">[35]</a> During the month of July 1950, a total of 309,314 tonnes (304,429 long tons; 340,960 short tons) of supplies and equipment were off-loaded at Pusan, at a rate of about 10,666 tonnes (10,498 long tons; 11,757 short tons) per day. The first heavy lift cranes arrived on July 23. A 60 tonnes (59 long tons; 66 short tons) crane and two crawler cranes, towed 900 miles (1,400 km) from Yokohama. Not until the first week of August did a 100 tonnes (98 long tons; 110 short tons) crane reach Pusan. In the last half of July, 230 ships arrived and 214 departed Pusan harbor.<a href="#cite_note-Apple259-49">[49]</a> During this period, 42,581 troops, 9,454 vehicles, and 88,888 long tons (90,314 t) of supplies came ashore there. Subordinate ports of <a href="/wiki/Ulsan" title="Ulsan">Ulsan</a> and <a href="/w/index.php?title=Suyong&action=edit&redlink=1" class="new" title="Suyong (page does not exist)">Suyong</a> unloaded ammunition and petroleum products over the beaches from barges, tankers, and <a href="/wiki/Landing_Craft_Mechanized" class="mw-redirect" title="Landing Craft Mechanized">LCMs</a>.<a href="#cite_note-Apple260-45">[45]</a> <div class="mw-heading mw-heading3"><h3 id="Movement_to_the_front_lines">Movement to the front lines</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=8" title="Edit section: Movement to the front lines">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Pusan_rail.jpg" class="mw-file-description"><img alt="A road and railway running through mountains" src="//upload.wikimedia.org/wikipedia/commons/thumb/2/29/Pusan_rail.jpg/220px-Pusan_rail.jpg" decoding="async" width="220" height="155" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/2/29/Pusan_rail.jpg/330px-Pusan_rail.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/2/29/Pusan_rail.jpg/440px-Pusan_rail.jpg 2x" data-file-width="600" data-file-height="423" /></a><figcaption>The main Seoul–Pusan railway and road was integral in bringing supplies to the front.</figcaption></figure> From Busan a good <a href="/wiki/Railroad" class="mw-redirect" title="Railroad">railroad</a> system built by the Japanese and well <a href="/wiki/Track_ballast" title="Track ballast">ballasted</a> with crushed rock and river gravel extended northward.<a href="#cite_note-G76-50">[50]</a> Subordinate rail lines ran westward along the south coast through <a href="/wiki/Masan" title="Masan">Masan</a> and <a href="/wiki/Chinju" class="mw-redirect" title="Chinju">Chinju</a> and northeast near the east coast to <a href="/wiki/P%27ohang-dong" class="mw-redirect" title="P'ohang-dong">P'ohang-dong</a>. There the eastern line turned inland through the east-central <a href="/wiki/Taebaek_Mountains" title="Taebaek Mountains">Taebaek Mountains</a> area. The railroads were the backbone of the UN transportation system in Korea.<a href="#cite_note-Apple116-35">[35]</a><a href="#cite_note-Sh13-51">[51]</a> The 20,000 miles (32,000 km) of Korean vehicular roads were all of a secondary nature as measured by American or European standards.<a href="#cite_note-Sh18-52">[52]</a> Even the best of them were narrow, poorly drained, and surfaced only with gravel or rocks broken laboriously by hand, and worked into the dirt roadbed by the traffic passing over. The highest classification placed on any appreciable length of road in Korea by Eighth Army engineers was for a gravel or crushed rock road with gentle grades and curves and one and a half to two lanes wide. According to engineer specifications there were no two-lane roads, 22 feet (6.7 m) wide, in Korea. The average width of the best roads was 18 feet (5.5 m) with numerous bottlenecks at narrow bridges and bypasses where the width narrowed to 11–13 feet (3.4–4.0 m). Often even on these roads there were short stretches having sharp curves and grades up to 15 percent. The Korean road traffic was predominately by <a href="/wiki/Bullock_cart" title="Bullock cart">oxcart</a>. The road net, like the rail net, was principally north–south, with a few lateral east–west connecting roads.<a href="#cite_note-Apple116-35">[35]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Barbed_Wire_rail.jpg" class="mw-file-description"><img alt="train cars full of bound wire lined up on a railroad" src="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Barbed_Wire_rail.jpg/220px-Barbed_Wire_rail.jpg" decoding="async" width="220" height="275" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Barbed_Wire_rail.jpg/330px-Barbed_Wire_rail.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Barbed_Wire_rail.jpg/440px-Barbed_Wire_rail.jpg 2x" data-file-width="2400" data-file-height="3000" /></a><figcaption><a href="/wiki/Barbed_wire" title="Barbed wire">Barbed wire</a> is moved along the Seoul–Pusan railway to the front lines, 1950.</figcaption></figure> US Army logistics units worked continuously during July to organize the train movements from Busan toward the rail-heads at the front. By July 18 they had established a regular daily schedule of supply trains over two routes, the main Pusan–Taegu–Kumch'on line with a branch line from <a href="/wiki/Kumch%27on" class="mw-redirect" title="Kumch'on">Kumch'on</a> to <a href="/wiki/Hamch%27ang" class="mw-redirect" title="Hamch'ang">Hamch'ang</a>; and the Pusan–Kyongju–<a href="/wiki/Andong" title="Andong">Andong</a> single track line up the east coast with a branch line from <a href="/wiki/Kyongju" class="mw-redirect" title="Kyongju">Kyongju</a> to P'ohang-dong. As the battle front moved swiftly southward, trains after the end of July did not run beyond Taegu and P'ohang-dong. After the North Korean threat developed in the Masan region, a supply train ran daily from Pusan to that city. On July 1 the UN Command controlled 1,404 miles (2,260 km) of rail track in South Korea. By August this had shrunk to 431 miles (694 km) of track.<a href="#cite_note-Apple261-27">[27]</a> In July, 350 mixed trains moved from Pusan toward the front. These included 2,313 freight cars loaded with 69,390 short tons (62,950 t) of supplies. Also leaving Busan for the front were 71 personnel trains carrying military units and replacements. Among the trains returning to Pusan from the forward area were 38 hospital trains carrying 2,581 patients, and 158 freight cars loaded largely with personal belongings taken by unit commanders from their men in trying to strip them down to only combat needs.<a href="#cite_note-Apple261-27">[27]</a> Since the Korean railroads had been built by Japan, repair and replacement items could be borrowed from the Japanese National Railways and airlifted to Korea within a very short time after the need for them became known. One of the largest and most important of rail purchases in Japan for use in Korea was 25 <a href="/wiki/Standard-gauge" class="mw-redirect" title="Standard-gauge">standard-gauge</a> <a href="/wiki/Locomotives" class="mw-redirect" title="Locomotives">locomotives</a>. By August 1 the <a href="/wiki/ROK_National_Police" class="mw-redirect" title="ROK National Police">ROK National Police</a> was responsible for protecting all rail bridges and tunnels. Armed guards, their number varying with the importance of the structures, were stationed at each of them.<a href="#cite_note-Apple261-27">[27]</a> Occasionally, <a href="/wiki/Guerrilla" class="mw-redirect" title="Guerrilla">guerrillas</a> would attack trains in rear areas of the Pusan Perimeter, usually in the Yongch'on–Kyongju area in the east or along the lower <a href="/wiki/Naktong" class="mw-redirect" title="Naktong">Naktong</a> in the <a href="/wiki/Samnangjin" title="Samnangjin">Samnangjin</a> area. These attacks generally resulted in small numbers of UN casualties and minor damage to rail equipment. The most successful guerrilla attack behind the lines of the Pusan Perimeter occurred on August 11 against a <a href="/wiki/VHF" class="mw-redirect" title="VHF">VHF</a> radio relay station on Hill 915, 8 miles (13 km) south of Taegu. A guerrilla force, estimated at 100 men attacked at 05:15, drove off the ROK police and set fire to the buildings. American casualties were two killed, two wounded, and three missing. When a ROK police force reoccupied the area later in the day the guerrillas had pulled back.<a href="#cite_note-Apple384-53">[53]</a> In August the UN also began using <a href="/wiki/Korean_Service_Corps" title="Korean Service Corps">Korean civilians</a> with <a href="/wiki/A-frames" class="mw-redirect" title="A-frames">A-frames</a> as cargo carriers to move supplies up through the mountains to the front lines. This method of transport proved both cheaper and more efficient than using pack animals. American units obtained the civilian carriers through arrangements with the ROK Army. Soon the American divisions were using Korean labor for nearly all unskilled work, at an average of about 500 laborers and carriers to a division.<a href="#cite_note-Apple388-54">[54]</a> <div class="mw-heading mw-heading2"><h2 id="North_Korean_logistics">North Korean logistics</h2>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=9" title="Edit section: North Korean logistics">edit</a>]</div> The responsibility of the North Korean logistics was divided between the Ministry of National Defense (MND), led by Marshal <a href="/wiki/Choe_Yong-gon_(army_commander)" class="mw-redirect" title="Choe Yong-gon (army commander)">Choe Yong Gun</a>, and the NKPA Rear Service Department, commanded by General Choe Hong Kup.<a href="#cite_note-Sh29_32-55">[55]</a> The MND was mainly responsible for railroad transportation and supply procurement, while the Rear Service Department was responsible for road transportation.<a href="#cite_note-Sh29_32-55">[55]</a> The North Koreans relied on a logistical system which was very lean and substantially smaller than the United Nations' system. This logistics network was therefore capable of moving far fewer supplies, and this caused considerable difficulty for front line troops. Based on the efficient Soviet model, this ground-based network relied mostly on railroads to transport supplies to the front lines while troops transported those items onto the individual units on foot, trucks, or carts. This second effort, though more versatile, was also a substantial disadvantage because it was less efficient and often too slow to follow the moving front-line units.<a href="#cite_note-Sh5-56">[56]</a> <div class="mw-heading mw-heading3"><h3 id="Challenges_2">Challenges</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=10" title="Edit section: Challenges">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:RocketandNapalmAttack.jpg" class="mw-file-description"><img alt="A train being racked by explosions" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/6f/RocketandNapalmAttack.jpg/220px-RocketandNapalmAttack.jpg" decoding="async" width="220" height="321" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/6/6f/RocketandNapalmAttack.jpg 1.5x" data-file-width="300" data-file-height="438" /></a><figcaption>US aircraft attack a North Korean train with rockets and <a href="/wiki/Napalm" title="Napalm">napalm</a>, 1950.</figcaption></figure> In mid-July, the UN <a href="/wiki/Pacific_Air_Forces" title="Pacific Air Forces">Far East Air Force</a> (FEAF) Bomber Command began a steady and increasing attack on strategic North Korean logistics targets behind the front lines. The first of these targets was <a href="/wiki/Wonsan" title="Wonsan">Wonsan</a> on the east coast. Wonsan was important as a communications center that linked <a href="/wiki/Vladivostok" title="Vladivostok">Vladivostok</a>, <a href="/wiki/Siberia" title="Siberia">Siberia</a> with North Korea by rail and sea. From it, rail lines ran to all the North Korean build-up centers. The great bulk of Soviet supplies for North Korea in the early part of the war came in at Wonsan, and from the beginning it was considered a major military target. In the first heavy strategic bombing of the war, the FEAF hit the port city on July 13 with 400 tonnes (390 long tons; 440 short tons) of demolition bombs. Three days later, 30 <a href="/wiki/B-29" class="mw-redirect" title="B-29">B-29</a> bombers struck the railroad marshaling yards at Seoul, another major staging area for North Korean supplies.<a href="#cite_note-Apple256-57">[57]</a> UN bombers immediately targeted the pontoon bridge across the Han River at Seoul which was a main line of supply to the Pusan battlefield, and to destroy the repaired railroad bridge there. Several attempts in July by B-29s to destroy the rail bridge failed, but on July 29, 12 bombers succeeded in hitting the pontoon bridge and reported it as having been destroyed. The next day, 47 B-29s bombed the Chosen Nitrogen Plant at Hungnam on the northeast coast. In the meantime, carrier-based planes from the <a href="/wiki/USS_Valley_Forge_(CV-45)" title="USS Valley Forge (CV-45)">USS Valley Forge</a>, which was operating in the <a href="/wiki/Yellow_Sea" title="Yellow Sea">Yellow Sea</a>, destroyed six locomotives, exploded 18 cars of a 33-car train, and damaged a combination highway and rail bridge at Haeju on July 22.<a href="#cite_note-Apple256-57">[57]</a> By July 27, the FEAF Bomber Command had a comprehensive rail interdiction plan ready.<a href="#cite_note-Sh3-58">[58]</a> This plan sought to cut the flow of North Korean troops and materiel from North Korea to the combat area. Two cut points, the P'yong-yang railroad bridge and marshaling yards and the <a href="/wiki/Hamhung" title="Hamhung">Hamhung</a> bridge and Hamhung and Wonsan marshaling yards would almost completely sever North Korea's rail logistics network. Destruction of the rail bridges over the Han near Seoul would cut rail communication to the Pusan Perimeter area. On July 28 the Far East Air Forces gave a list of targets in the rail interdiction program to the Bomber Command, and two days later a similar plan was ready for interdiction of highways. On August 3, the FEAF issued lists of targets for coordinated interdiction attacks south of the <a href="/wiki/38th_Parallel_north" class="mw-redirect" title="38th Parallel north">38th Parallel</a> to the <a href="/wiki/Fifth_Air_Force" title="Fifth Air Force">Fifth Air Force</a> and to the Navy. In general, the <a href="/wiki/Han_River_(Korea)" title="Han River (Korea)">Han River</a> divided the Fifth Air Force and FEAF Bomber Command zones.<a href="#cite_note-Apple257-44">[44]</a> <figure class="mw-default-size mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:WarKorea_B-29-korea.jpg" class="mw-file-description"><img alt="A large aircraft dropping bombs mid-flight" src="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/WarKorea_B-29-korea.jpg/220px-WarKorea_B-29-korea.jpg" decoding="async" width="220" height="287" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/6/66/WarKorea_B-29-korea.jpg/330px-WarKorea_B-29-korea.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/6/66/WarKorea_B-29-korea.jpg/440px-WarKorea_B-29-korea.jpg 2x" data-file-width="600" data-file-height="783" /></a><figcaption>A <a href="/wiki/B-29_Superfortress" class="mw-redirect" title="B-29 Superfortress">B-29 Superfortress</a> during a Korean War bombing run. B-29s conducted most of the air interdiction raids against North Korean supply lines.</figcaption></figure> On August 4, the FEAF began B-29 interdiction attacks against all key bridges north of the <a href="/wiki/37th_Parallel_north" class="mw-redirect" title="37th Parallel north">37th Parallel</a> in Korea, and on August 15 some light bombers and fighter-bombers joined in the interdiction campaign.<a href="#cite_note-Sh4-59">[59]</a> This campaign sought the destruction of 32 rail and highway bridges on the three main transportation routes across Korea: the line from <a href="/wiki/Sinanju" title="Sinanju">Sinanju</a> south to P'yongyang and northeast to Wonsan on the east coast; the line just below the 38th Parallel from <a href="/wiki/Munsan-ni" class="mw-redirect" title="Munsan-ni">Munsan-ni</a> through Seoul to <a href="/wiki/Ch%27unch%27on" class="mw-redirect" title="Ch'unch'on">Ch'unch'on</a> to <a href="/wiki/Chumunjin-up" class="mw-redirect" title="Chumunjin-up">Chumunjin-up</a> on the east coast; and the line from Seoul south to <a href="/wiki/Choch%27iwon" class="mw-redirect" title="Choch'iwon">Choch'iwon</a> and east to <a href="/wiki/Wonju" title="Wonju">Wonju</a> to <a href="/wiki/Samch%27ok" class="mw-redirect" title="Samch'ok">Samch'ok</a> on the east coast. The interdiction campaign marked nine rail yards, including those at Seoul, P'yongyang, and Wonsan, for attack, and the ports of <a href="/wiki/Inch%27on" class="mw-redirect" title="Inch'on">Inch'on</a> and Wonsan to be mined. This interdiction program, if effectively executed, would slow and perhaps critically disrupt the movement of North Korean supplies along the main routes south to the battlefront.<a href="#cite_note-Apple377-31">[31]</a> The US Air Force B-29s bombed and largely destroyed the P'yongyang Army Arsenal and the P'yongyang railroad yards on August 7. They bombed and completely destroyed the large Chosen petroleum refinery at Wonsan on August 7, 9, and 10. This plant, with its estimated capacity of 250,000 tonnes (250,000 long tons; 280,000 short tons), annually produced approximately 93 percent of the North Korean <a href="/wiki/Petroleum" title="Petroleum">petroleum</a> products. Throughout the month the US Air Force bombed the chemical complex in the <a href="/wiki/Hungnam" title="Hungnam">Hungnam</a> area, the largest in Asia, dropping 1,761 tonnes (1,733 long tons; 1,941 short tons) of bombs there in the period between July 30 and September 19. It bombed the <a href="/wiki/Najin" class="mw-redirect" title="Najin">Najin</a> docks only 17 miles (27 km) south of the Siberian border and 10 miles (16 km) from Vladivostok. Najin was an important port of entry for vessels carrying supplies from Vladivostok and it was also a rail center. The bombers struck the metal-working industry at <a href="/wiki/Songjin" class="mw-redirect" title="Songjin">Songjin</a> with 326 tonnes (321 long tons; 359 short tons) of bombs on August 28, and three days later they heavily damaged the <a href="/wiki/Aluminum" class="mw-redirect" title="Aluminum">aluminum</a> and <a href="/wiki/Magnesium" title="Magnesium">magnesium</a> plants at <a href="/wiki/Chinnamp%27o" class="mw-redirect" title="Chinnamp'o">Chinnamp'o</a> with 284 tonnes (280 long tons; 313 short tons) of bombs.<a href="#cite_note-Apple377-31">[31]</a> <div class="mw-heading mw-heading3"><h3 id="Land_resupply">Land resupply</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=11" title="Edit section: Land resupply">edit</a>]</div> <figure class="mw-default-size" typeof="mw:File/Thumb"><a href="/wiki/File:Korean_War_bombing_Wonsan.jpg" class="mw-file-description"><img alt="A bomb explodes in a large coastal town" src="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Korean_War_bombing_Wonsan.jpg/220px-Korean_War_bombing_Wonsan.jpg" decoding="async" width="220" height="177" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/5/51/Korean_War_bombing_Wonsan.jpg/330px-Korean_War_bombing_Wonsan.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/5/51/Korean_War_bombing_Wonsan.jpg/440px-Korean_War_bombing_Wonsan.jpg 2x" data-file-width="2929" data-file-height="2359" /></a><figcaption>Wonsan under attack in 1951. Despite UN raids it remained one of North Korea's only ports that was developed enough for movement of small numbers of troops and amounts of logistics.</figcaption></figure> North Korea's lack of large airstrips and aircraft meant it conducted only minimal air resupply, mostly critical items being imported from <a href="/wiki/China" title="China">China</a>. Other than this, however, aircraft played almost no role in North Korean logistics.<a href="#cite_note-Sh20-60">[60]</a> The North Koreans were also not able to effectively use sea transport to their advantage. Ports in Wonsan and Hungnam could be used for the transport of some troops and supplies, but they remained far too underdeveloped to support any large-scale logistical movements, and the port of <a href="/wiki/Inchon" class="mw-redirect" title="Inchon">Inchon</a> in the south was difficult to navigate with large numbers of ships.<a href="#cite_note-Sh10-61">[61]</a> The interior of Korea also lacked navigable waterways, as the shallow streams and rivers did not provide for the movement of large ships. These rivers would only be of local importance to battles.<a href="#cite_note-Sh13-51">[51]</a> The North Koreans tried on several occasions to resupply their units by sea or conduct amphibious operations at the outbreak of the war but each time were decisively defeated. At engagements such as the <a href="/wiki/Battle_of_Korea_Strait" title="Battle of Korea Strait">Battle of Pusan</a> and the <a href="/wiki/Battle_of_Chumonchin_Chan" title="Battle of Chumonchin Chan">Battle of Chumonchin Chan</a> the UN naval blockade was effective in halting almost all North Korean naval activity.<a href="#cite_note-Millett92-62">[62]</a> This meant the railroads and highways in Korea took central prominence to North Korean resupply. The North Koreans were given supplies by both China and the <a href="/wiki/Soviet_Union" title="Soviet Union">Soviet Union</a>, neither of whom were committed to the war at this point, and did not commit combat troops directly. They fed supplies into North Korea through six rail lines, five from <a href="/wiki/Manchuria" title="Manchuria">Manchuria</a> and one from Siberia. China in particular had an extensive rail network and thousands of locomotives. The railroads had the capacity to send up to 17,500 tonnes (17,200 long tons; 19,300 short tons) of supplies into North Korea per day. The full amount of supplies that were actually sent to North Korea at this phase of the war is unclear, but historians suggest that even at the height of the war and Chinese involvement the supplies did not increase beyond 13,000 tonnes (13,000 long tons; 14,000 short tons) per day.<a href="#cite_note-Sh16-63">[63]</a> However the railroads were mostly oriented on north–south routes, making resupply from east to west difficult.<a href="#cite_note-Sh15-64">[64]</a> North Korean logistics held much more substantial facilities for their railroad system, which were based in Seoul. However, they also did not have the benefit of buying replacement and repair parts from Japan, and consequently their railroads were in much worse condition than those held by the UN. They controlled the bulk of Korea's 3,000 miles (4,800 km) of railroad. They also controlled most of the 1,500 locomotives and 9,000 rail cars on the peninsula, though most of these were not serviceable during the fight.<a href="#cite_note-Sh14-65">[65]</a> Seoul was also the focal point of Korea's highway network. It also had several crucial connection points to the Soviet Union and China, but it was not designed for military traffic and the weather conditions made travel on the roads difficult. Overall the roads into Korea provided only 48 percent of the capacity of the railroads.<a href="#cite_note-Sh18-52">[52]</a> <div class="mw-heading mw-heading3"><h3 id="Movement_to_the_front_lines_2">Movement to the front lines</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=12" title="Edit section: Movement to the front lines">edit</a>]</div> The supremacy of the Fifth Air Force in the skies over Korea forced the North Koreans in the first month of the war to resort to night movement of supplies to the battle area.<a href="#cite_note-Apple377-31">[31]</a> They relied mostly on railroads to move supplies to the front, however a shortage of trucks posed the most serious problem of getting supplies from the trains to individual units, forcing them to rely on carts and pack animals.<a href="#cite_note-Sh5-56">[56]</a> <figure class="mw-halign-left" typeof="mw:File/Thumb"><a href="/wiki/File:Korean_War,_train_attack.jpg" class="mw-file-description"><img alt="A bomb explodes on a moving train." src="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Korean_War%2C_train_attack.jpg/250px-Korean_War%2C_train_attack.jpg" decoding="async" width="250" height="192" class="mw-file-element" srcset="//upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Korean_War%2C_train_attack.jpg/375px-Korean_War%2C_train_attack.jpg 1.5x, //upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Korean_War%2C_train_attack.jpg/500px-Korean_War%2C_train_attack.jpg 2x" data-file-width="1367" data-file-height="1052" /></a><figcaption>US planes attacking railroads south of <a href="/wiki/Wonsan" title="Wonsan">Wonsan</a> on the eastern coast of North Korea, 1950.</figcaption></figure> Since capturing Seoul, the North Koreans had built two <a href="/wiki/Pontoon_bridge" title="Pontoon bridge">pontoon bridges</a> over the Han, one north and one south of the main rail and highway bridges. They had also started a new railroad bridge north of the old triple bridge group. The steel <a href="/wiki/Cantilever" title="Cantilever">cantilever</a> railroad bridge on the west still stood despite Far East Air Forces attempts to destroy it. For almost four weeks the Air Force bombed this bridge daily using bombs with fuze settings that were intended to damage both the superstructure and the abutments. On August 19, nine B-29s of the <a href="/wiki/19th_Bombardment_Group" class="mw-redirect" title="19th Bombardment Group">19th Bombardment Group</a> dropped 54 tonnes (53 long tons; 60 short tons) of bombs on the bridge, but it still stood. The same day, Navy carrier-based planes attacked the bridge, scoring eight direct hits, and brought it down.<a href="#cite_note-Apple377-31">[31]</a> Attacks against the Han River pontoon bridges at Seoul do not seem to have been successful until FEAF ordered the Bomber Command to lay <a href="/wiki/Delay-action_bomb" title="Delay-action bomb">delayed action bombs</a> alongside the bridges on August 27, set to detonate at night. This method of attack seems to have caused such heavy casualties among the North Korean labor force trying to keep the pontoons in repair that they finally abandoned the effort. These bridges remained unfinished when the UN forces recaptured Seoul later in the year.<a href="#cite_note-Apple377-31">[31]</a> The North Korean People's Army was able to maintain transport to its front lines over long lines of communications despite heavy and constant air attacks. The United Nations air effort failed to halt military rail transport.<a href="#cite_note-Apple393-66">[66]</a> Ammunition and motor fuel, which took precedence over all other types of supply, continued to arrive at the front, though in smaller amounts than before.<a href="#cite_note-Fehr136-67">[67]</a> There was still a considerable resupply of heavy weapons, such as tanks, artillery, and mortars, at the front in early September, although a steady decline in artillery can be traced from the middle of August. There was a sufficient supply of small arms ammunition, but a shortage of small arms themselves became apparent by mid-August and continued to worsen with each passing week. Rear areas were able to fill only about one third of the requisitions from the front for small arms in mid-August and resupply ceased entirely about the middle of September. New trucks were almost impossible to obtain. There was no resupply of clothing.<a href="#cite_note-Apple393-66">[66]</a> At best there were rations for only one or two meals a day.<a href="#cite_note-Alex135-68">[68]</a> Most units had to live at least partially off the South Korean populace, scavenging for food and supplies at night.<a href="#cite_note-Millett164-69">[69]</a> By September 1 the food situation was so bad in the North Korean Army at the front that most of the soldiers showed a loss of stamina with resulting impaired combat effectiveness.<a href="#cite_note-Apple393-66">[66]</a> At the same time, seriously wounded North Korean soldiers were often not transported to the rear for medical services, and many died while stranded on the front line.<a href="#cite_note-mahoney17-70">[70]</a> The inefficiency of North Korean logistics remained a fatal weakness of the North Korean Army, costing it crucial defeats after an initial success with combat forces.<a href="#cite_note-Sh5-56">[56]</a> The North Koreans' communications and supply were not capable of exploiting a breakthrough and of supporting a continuing attack in the face of massive air, armor, and artillery fire that could be concentrated against its troops at critical points.<a href="#cite_note-Apple466-71">[71]</a> Several units lost crucially needed supply lines in the middle of their offensives, particularly when crossing the <a href="/wiki/Naktong_River" class="mw-redirect" title="Naktong River">Naktong River</a> which had few stable bridges remaining. The <a href="/wiki/NK_3rd_Division" class="mw-redirect" title="NK 3rd Division">NK 3rd Division</a> stopped receiving food and ammunition supply as it pushed on Taegu in mid-August, forcing one of its regiments to withdraw from the captured <a href="/wiki/Battle_of_Taegu#Triangulation_Hill" title="Battle of Taegu">Triangulation Hill</a>.<a href="#cite_note-Apple341-72">[72]</a> At <a href="/wiki/First_Battle_of_Naktong_Bulge" title="First Battle of Naktong Bulge">Naktong Bulge</a>, the NK 4th Division was able to establish a raft system for moving supplies across the river, but it still suffered serious food, ammunition, weapon, and equipment shortages after its August 5 crossing. It was also eventually turned back due to supply problems.<a href="#cite_note-73">[73]</a> The situation was most dire for units in the east, where rugged and mountainous terrain already posed a logistical challenge. The <a href="/wiki/NK_5th_Division" class="mw-redirect" title="NK 5th Division">NK 5th Division</a> and <a href="/wiki/NK_12th_Division" class="mw-redirect" title="NK 12th Division">NK 12th Division</a> attacking <a href="/wiki/Battle_of_P%27ohang-dong" title="Battle of P'ohang-dong">P'ohang-dong</a> stopped receiving all food and ammunition supply between August 12 and August 20, a key factor in their defeat there.<a href="#cite_note-Fehr136-67">[67]</a><a href="#cite_note-Apple333-74">[74]</a> In some instances, desperate North Korean units forced South Korean populations to carry their supplies for them.<a href="#cite_note-75">[75]</a> North Korean units had advanced too far too quickly, and their logistical system, stretched beyond its limit, collapsed at a key point in the war.<a href="#cite_note-Alex135-68">[68]</a><a href="#cite_note-Apple333-74">[74]</a> Morale remained high for many units despite the lack of supplies.<a href="#cite_note-Sh5-56">[56]</a><a href="#cite_note-Apple333-74">[74]</a> North Korean units instead turned to foraging for what they could find in the countryside or raiding UN supplies. Small <a href="/wiki/Guerrilla_warfare" title="Guerrilla warfare">guerrilla</a> units, such as the <a href="/wiki/NK_766th_Infantry_Regiment" class="mw-redirect" title="NK 766th Infantry Regiment">NK 766th Infantry Regiment</a>, could do this effectively.<a href="#cite_note-Millett164-69">[69]</a> <div class="mw-heading mw-heading2"><h2 id="Conclusions">Conclusions</h2>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=13" title="Edit section: Conclusions">edit</a>]</div> Historians contend that for the UN and North Korea, locked in a bitter battle where neither could gain the upper hand, logistics was among the most important determining factors in how the war would progress.<a href="#cite_note-Sh3-58">[58]</a> As the disparity in logistics capability widened between the UN and North Korean forces, the well-supported UN troops were able to hold their positions along the Pusan Perimeter, while the morale and the fighting quality of NKPA deteriorated as resupplies became increasingly unreliable.<a href="#cite_note-Sh167-76">[76]</a> This trend ultimately culminated in the UN <a href="/wiki/Second_Battle_of_Seoul" title="Second Battle of Seoul">recapturing Seoul</a>, the key logistics center of the battle, and the collapse of the North Korean logistics system with the entire NKPA.<a href="#cite_note-Sh167-76">[76]</a> As the battle for Pusan Perimeter wore on, logistics took an increasingly important toll on the outcome of individual engagements. UN units faced the challenge of re-equipping the ROK Army and supporting a massive force of troops in a large-scale war that it had not anticipated or planned for.<a href="#cite_note-Apple114-21">[21]</a> Still, historians have praised US Army logistics planners for the way that they were able to organize a working logistics system for the UN forces in the battle.<a href="#cite_note-G57-32">[32]</a><a href="#cite_note-Apple380-38">[38]</a> Upon the outbreak of the war, the United States had an overwhelming advantage in materiel which had been left behind from World War II, and it relied on this to supply units in the first crucial days while new materiel was produced and shipped into the theater.<a href="#cite_note-G58-25">[25]</a> Air superiority was another critical advantage in the favor of the UN. A number of UN contributing nations provided large air forces so that materiel could be transported quickly. At the same time, US Army planners established Pusan port as the main port for supply delivery.<a href="#cite_note-Apple115-28">[28]</a> The UN also had a great advantage in the port of Pusan itself as it was the most developed port in Korea and as a consequence had the capacity for large numbers of ships to offload supplies. With a large transcontinental navy and strong economic base in Japan, the UN forces were able to utilize the port effectively.<a href="#cite_note-Apple260-45">[45]</a> These advantages ensured that UN forces had mostly stable lines of supply for the entirety of the battle.<a href="#cite_note-Apple377-31">[31]</a> North Korean troops had the advantage of planning the invasion in advance and organizing a pre-set logistics network, but they were not able to keep this logistics network running efficiently. Their largest disadvantage was the successful large-scale UN interdiction effort, as North Korean supplies and supply lines were subjected to UN bombing raids.<a href="#cite_note-Apple256-57">[57]</a> This effort was not successful in stopping the North Korean supplies, and the North Koreans have also been praised by historians for the way in which they were able to maintain a supply network in the face of a massive bombing campaign.<a href="#cite_note-Apple393-66">[66]</a> However, the North Koreans did suffer reduced supply because of this, and inefficiencies in transporting supplies from railroads to individual units negated the railroads' advantage.<a href="#cite_note-Sh5-56">[56]</a> North Korean forces, though initially successful, were unable to counter UN forces with effective air defense, and were also unable to conduct successful interdiction of their own. This meant their supply network limited the combat actions that they could undertake; logistics could not keep up with units on the offensive, and North Korean units went almost completely unsupported during key engagements, reducing their ability to fight effectively.<a href="#cite_note-Apple466-71">[71]</a> North Korean logistical inefficiency prevented them from overwhelming UN units in the Pusan Perimeter and enabled the defending UN troops to hold on long enough for a <a href="/wiki/Battle_of_Inchon" title="Battle of Inchon">counterattack to be launched at Inchon</a>. This landing, coming behind North Korean lines, had the effect of collapsing the North Korean front and ultimately ended the battle around Pusan in September.<a href="#cite_note-Apple333-74">[74]</a> <div class="mw-heading mw-heading2"><h2 id="References">References</h2>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=14" title="Edit section: References">edit</a>]</div> <div class="mw-heading mw-heading3"><h3 id="Citations">Citations</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=15" title="Edit section: Citations">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239543626">.mw-parser-output .reflist{margin-bottom:0.5em;list-style-type:decimal}@media screen{.mw-parser-output .reflist{font-size:90%}}.mw-parser-output .reflist .references{font-size:100%;margin-bottom:0;list-style-type:inherit}.mw-parser-output .reflist-columns-2{column-width:30em}.mw-parser-output .reflist-columns-3{column-width:25em}.mw-parser-output .reflist-columns{margin-top:0.3em}.mw-parser-output .reflist-columns ol{margin-top:0}.mw-parser-output .reflist-columns li{page-break-inside:avoid;break-inside:avoid-column}.mw-parser-output .reflist-upper-alpha{list-style-type:upper-alpha}.mw-parser-output .reflist-upper-roman{list-style-type:upper-roman}.mw-parser-output .reflist-lower-alpha{list-style-type:lower-alpha}.mw-parser-output .reflist-lower-greek{list-style-type:lower-greek}.mw-parser-output .reflist-lower-roman{list-style-type:lower-roman}</style><div class="reflist reflist-columns references-column-width reflist-columns-2"> <ol class="references"> <li id="cite_note-1"><a href="#cite_ref-1">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 1 </li> <li id="cite_note-2"><a href="#cite_ref-2">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 2 </li> <li id="cite_note-3"><a href="#cite_ref-3">^</a> <a href="#CITEREFVarhola2000">Varhola 2000</a>, p. 2 </li> <li id="cite_note-4"><a href="#cite_ref-4">^</a> <a href="#CITEREFMalkasian2001">Malkasian 2001</a>, p. 23 </li> <li id="cite_note-Malk24-5"><a href="#cite_ref-Malk24_5-0">^</a> <a href="#CITEREFMalkasian2001">Malkasian 2001</a>, p. 24 </li> <li id="cite_note-Var3-6">^ <a href="#cite_ref-Var3_6-0">a</a> <a href="#cite_ref-Var3_6-1">b</a> <a href="#CITEREFVarhola2000">Varhola 2000</a>, p. 3 </li> <li id="cite_note-Alexander52-7">^ <a href="#cite_ref-Alexander52_7-0">a</a> <a href="#cite_ref-Alexander52_7-1">b</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 52 </li> <li id="cite_note-8"><a href="#cite_ref-8">^</a> <a href="#CITEREFCatchpole2001">Catchpole 2001</a>, p. 15 </li> <li id="cite_note-Var4-9">^ <a href="#cite_ref-Var4_9-0">a</a> <a href="#cite_ref-Var4_9-1">b</a> <a href="#CITEREFVarhola2000">Varhola 2000</a>, p. 4 </li> <li id="cite_note-Alex90-10"><a href="#cite_ref-Alex90_10-0">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 90 </li> <li id="cite_note-Alex105-11"><a href="#cite_ref-Alex105_11-0">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 105 </li> <li id="cite_note-Fehr103-12"><a href="#cite_ref-Fehr103_12-0">^</a> <a href="#CITEREFFehrenbach2001">Fehrenbach 2001</a>, p. 103 </li> <li id="cite_note-Apple222-13"><a href="#cite_ref-Apple222_13-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 222 </li> <li id="cite_note-Catch22-14"><a href="#cite_ref-Catch22_14-0">^</a> <a href="#CITEREFCatchpole2001">Catchpole 2001</a>, p. 22 </li> <li id="cite_note-Apple221-15"><a href="#cite_ref-Apple221_15-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 221 </li> <li id="cite_note-16"><a href="#cite_ref-16">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 114 </li> <li id="cite_note-Catch24-17"><a href="#cite_ref-Catch24_17-0">^</a> <a href="#CITEREFCatchpole2001">Catchpole 2001</a>, p. 24 </li> <li id="cite_note-Catch25-18"><a href="#cite_ref-Catch25_18-0">^</a> <a href="#CITEREFCatchpole2001">Catchpole 2001</a>, p. 25 </li> <li id="cite_note-19"><a href="#cite_ref-19">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 247 </li> <li id="cite_note-G60-20">^ <a href="#cite_ref-G60_20-0">a</a> <a href="#cite_ref-G60_20-1">b</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 60 </li> <li id="cite_note-Apple114-21">^ <a href="#cite_ref-Apple114_21-0">a</a> <a href="#cite_ref-Apple114_21-1">b</a> <a href="#cite_ref-Apple114_21-2">c</a> <a href="#cite_ref-Apple114_21-3">d</a> <a href="#cite_ref-Apple114_21-4">e</a> <a href="#cite_ref-Apple114_21-5">f</a> <a href="#cite_ref-Apple114_21-6">g</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 114 </li> <li id="cite_note-G61-22"><a href="#cite_ref-G61_22-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 61 </li> <li id="cite_note-G62-23"><a href="#cite_ref-G62_23-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 62 </li> <li id="cite_note-G59-24"><a href="#cite_ref-G59_24-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 59 </li> <li id="cite_note-G58-25">^ <a href="#cite_ref-G58_25-0">a</a> <a href="#cite_ref-G58_25-1">b</a> <a href="#cite_ref-G58_25-2">c</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 58 </li> <li id="cite_note-G67-26"><a href="#cite_ref-G67_26-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 67 </li> <li id="cite_note-Apple261-27">^ <a href="#cite_ref-Apple261_27-0">a</a> <a href="#cite_ref-Apple261_27-1">b</a> <a href="#cite_ref-Apple261_27-2">c</a> <a href="#cite_ref-Apple261_27-3">d</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 261 </li> <li id="cite_note-Apple115-28">^ <a href="#cite_ref-Apple115_28-0">a</a> <a href="#cite_ref-Apple115_28-1">b</a> <a href="#cite_ref-Apple115_28-2">c</a> <a href="#cite_ref-Apple115_28-3">d</a> <a href="#cite_ref-Apple115_28-4">e</a> <a href="#cite_ref-Apple115_28-5">f</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 115 </li> <li id="cite_note-Apple370-29"><a href="#cite_ref-Apple370_29-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 370 </li> <li id="cite_note-30"><a href="#cite_ref-30">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 58 </li> <li id="cite_note-Apple377-31">^ <a href="#cite_ref-Apple377_31-0">a</a> <a href="#cite_ref-Apple377_31-1">b</a> <a href="#cite_ref-Apple377_31-2">c</a> <a href="#cite_ref-Apple377_31-3">d</a> <a href="#cite_ref-Apple377_31-4">e</a> <a href="#cite_ref-Apple377_31-5">f</a> <a href="#cite_ref-Apple377_31-6">g</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 377 </li> <li id="cite_note-G57-32">^ <a href="#cite_ref-G57_32-0">a</a> <a href="#cite_ref-G57_32-1">b</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 57 </li> <li id="cite_note-G68-33"><a href="#cite_ref-G68_33-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 68 </li> <li id="cite_note-G66-34"><a href="#cite_ref-G66_34-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 66 </li> <li id="cite_note-Apple116-35">^ <a href="#cite_ref-Apple116_35-0">a</a> <a href="#cite_ref-Apple116_35-1">b</a> <a href="#cite_ref-Apple116_35-2">c</a> <a href="#cite_ref-Apple116_35-3">d</a> <a href="#cite_ref-Apple116_35-4">e</a> <a href="#cite_ref-Apple116_35-5">f</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 116 </li> <li id="cite_note-Apple90-36"><a href="#cite_ref-Apple90_36-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 90 </li> <li id="cite_note-Apple50-37"><a href="#cite_ref-Apple50_37-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 50 </li> <li id="cite_note-Apple380-38">^ <a href="#cite_ref-Apple380_38-0">a</a> <a href="#cite_ref-Apple380_38-1">b</a> <a href="#cite_ref-Apple380_38-2">c</a> <a href="#cite_ref-Apple380_38-3">d</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 380 </li> <li id="cite_note-Apple381-39"><a href="#cite_ref-Apple381_39-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 381 </li> <li id="cite_note-Apple119-40"><a href="#cite_ref-Apple119_40-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 119 </li> <li id="cite_note-Apple298-41"><a href="#cite_ref-Apple298_41-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 298 </li> <li id="cite_note-42"><a href="#cite_ref-42">^</a> <a href="#CITEREFBerryGreenwood2005">Berry & Greenwood 2005</a>, p. 119 </li> <li id="cite_note-43"><a href="#cite_ref-43">^</a> <a href="#CITEREFBerryGreenwood2005">Berry & Greenwood 2005</a>, p. 120 </li> <li id="cite_note-Apple257-44">^ <a href="#cite_ref-Apple257_44-0">a</a> <a href="#cite_ref-Apple257_44-1">b</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 257 </li> <li id="cite_note-Apple260-45">^ <a href="#cite_ref-Apple260_45-0">a</a> <a href="#cite_ref-Apple260_45-1">b</a> <a href="#cite_ref-Apple260_45-2">c</a> <a href="#cite_ref-Apple260_45-3">d</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 260 </li> <li id="cite_note-G69-46"><a href="#cite_ref-G69_46-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 69 </li> <li id="cite_note-G70-47"><a href="#cite_ref-G70_47-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 70 </li> <li id="cite_note-G71-48"><a href="#cite_ref-G71_48-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 71 </li> <li id="cite_note-Apple259-49"><a href="#cite_ref-Apple259_49-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 259 </li> <li id="cite_note-G76-50"><a href="#cite_ref-G76_50-0">^</a> <a href="#CITEREFGough1987">Gough 1987</a>, p. 76 </li> <li id="cite_note-Sh13-51">^ <a href="#cite_ref-Sh13_51-0">a</a> <a href="#cite_ref-Sh13_51-1">b</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 13 </li> <li id="cite_note-Sh18-52">^ <a href="#cite_ref-Sh18_52-0">a</a> <a href="#cite_ref-Sh18_52-1">b</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 18 </li> <li id="cite_note-Apple384-53"><a href="#cite_ref-Apple384_53-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 384 </li> <li id="cite_note-Apple388-54"><a href="#cite_ref-Apple388_54-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 388 </li> <li id="cite_note-Sh29_32-55">^ <a href="#cite_ref-Sh29_32_55-0">a</a> <a href="#cite_ref-Sh29_32_55-1">b</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, pp. 29–32 </li> <li id="cite_note-Sh5-56">^ <a href="#cite_ref-Sh5_56-0">a</a> <a href="#cite_ref-Sh5_56-1">b</a> <a href="#cite_ref-Sh5_56-2">c</a> <a href="#cite_ref-Sh5_56-3">d</a> <a href="#cite_ref-Sh5_56-4">e</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 5 </li> <li id="cite_note-Apple256-57">^ <a href="#cite_ref-Apple256_57-0">a</a> <a href="#cite_ref-Apple256_57-1">b</a> <a href="#cite_ref-Apple256_57-2">c</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 256 </li> <li id="cite_note-Sh3-58">^ <a href="#cite_ref-Sh3_58-0">a</a> <a href="#cite_ref-Sh3_58-1">b</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 3 </li> <li id="cite_note-Sh4-59"><a href="#cite_ref-Sh4_59-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 4 </li> <li id="cite_note-Sh20-60"><a href="#cite_ref-Sh20_60-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 20 </li> <li id="cite_note-Sh10-61"><a href="#cite_ref-Sh10_61-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 10 </li> <li id="cite_note-Millett92-62"><a href="#cite_ref-Millett92_62-0">^</a> <a href="#CITEREFMillett2010">Millett 2010</a>, p. 92 </li> <li id="cite_note-Sh16-63"><a href="#cite_ref-Sh16_63-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 16 </li> <li id="cite_note-Sh15-64"><a href="#cite_ref-Sh15_64-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 15 </li> <li id="cite_note-Sh14-65"><a href="#cite_ref-Sh14_65-0">^</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 14 </li> <li id="cite_note-Apple393-66">^ <a href="#cite_ref-Apple393_66-0">a</a> <a href="#cite_ref-Apple393_66-1">b</a> <a href="#cite_ref-Apple393_66-2">c</a> <a href="#cite_ref-Apple393_66-3">d</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 393 </li> <li id="cite_note-Fehr136-67">^ <a href="#cite_ref-Fehr136_67-0">a</a> <a href="#cite_ref-Fehr136_67-1">b</a> <a href="#CITEREFFehrenbach2001">Fehrenbach 2001</a>, p. 136 </li> <li id="cite_note-Alex135-68">^ <a href="#cite_ref-Alex135_68-0">a</a> <a href="#cite_ref-Alex135_68-1">b</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 135 </li> <li id="cite_note-Millett164-69">^ <a href="#cite_ref-Millett164_69-0">a</a> <a href="#cite_ref-Millett164_69-1">b</a> <a href="#CITEREFMillett2010">Millett 2010</a>, p. 164 </li> <li id="cite_note-mahoney17-70"><a href="#cite_ref-mahoney17_70-0">^</a> <a href="#CITEREFMahoney2001">Mahoney 2001</a>, p. 17 </li> <li id="cite_note-Apple466-71">^ <a href="#cite_ref-Apple466_71-0">a</a> <a href="#cite_ref-Apple466_71-1">b</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 466 </li> <li id="cite_note-Apple341-72"><a href="#cite_ref-Apple341_72-0">^</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 341 </li> <li id="cite_note-73"><a href="#cite_ref-73">^</a> <a href="#CITEREFAlexander2003">Alexander 2003</a>, p. 138 </li> <li id="cite_note-Apple333-74">^ <a href="#cite_ref-Apple333_74-0">a</a> <a href="#cite_ref-Apple333_74-1">b</a> <a href="#cite_ref-Apple333_74-2">c</a> <a href="#cite_ref-Apple333_74-3">d</a> <a href="#CITEREFAppleman1998">Appleman 1998</a>, p. 333 </li> <li id="cite_note-75"><a href="#cite_ref-75">^</a> <a href="#CITEREFMillett2000">Millett 2000</a>, p. 396 </li> <li id="cite_note-Sh167-76">^ <a href="#cite_ref-Sh167_76-0">a</a> <a href="#cite_ref-Sh167_76-1">b</a> <a href="#CITEREFShrader1995">Shrader 1995</a>, p. 167 </li> </ol></div> <div class="mw-heading mw-heading3"><h3 id="Sources">Sources</h3>[<a href="/w/index.php?title=Battle_of_Pusan_Perimeter_logistics&action=edit&section=16" title="Edit section: Sources">edit</a>]</div> <style data-mw-deduplicate="TemplateStyles:r1239549316">.mw-parser-output .refbegin{margin-bottom:0.5em}.mw-parser-output .refbegin-hanging-indents>ul{margin-left:0}.mw-parser-output .refbegin-hanging-indents>ul>li{margin-left:0;padding-left:3.2em;text-indent:-3.2em}.mw-parser-output .refbegin-hanging-indents ul,.mw-parser-output .refbegin-hanging-indents ul li{list-style:none}@media(max-width:720px){.mw-parser-output .refbegin-hanging-indents>ul>li{padding-left:1.6em;text-indent:-1.6em}}.mw-parser-output .refbegin-columns{margin-top:0.3em}.mw-parser-output .refbegin-columns ul{margin-top:0}.mw-parser-output .refbegin-columns li{page-break-inside:avoid;break-inside:avoid-column}@media screen{.mw-parser-output .refbegin{font-size:90%}}</style><div class="refbegin" style=""> <ul><li><style data-mw-deduplicate="TemplateStyles:r1238218222">.mw-parser-output cite.citation{font-style:inherit;word-wrap:break-word}.mw-parser-output .citation q{quotes:"\"""\"""'""'"}.mw-parser-output .citation:target{background-color:rgba(0,127,255,0.133)}.mw-parser-output .id-lock-free.id-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/6/65/Lock-green.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-limited.id-lock-limited a,.mw-parser-output .id-lock-registration.id-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/d/d6/Lock-gray-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .id-lock-subscription.id-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/a/aa/Lock-red-alt-2.svg")right 0.1em center/9px no-repeat}.mw-parser-output .cs1-ws-icon a{background:url("//upload.wikimedia.org/wikipedia/commons/4/4c/Wikisource-logo.svg")right 0.1em center/12px no-repeat}body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-free a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-limited a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-registration a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .id-lock-subscription a,body:not(.skin-timeless):not(.skin-minerva) .mw-parser-output .cs1-ws-icon a{background-size:contain;padding:0 1em 0 0}.mw-parser-output .cs1-code{color:inherit;background:inherit;border:none;padding:inherit}.mw-parser-output .cs1-hidden-error{display:none;color:var(--color-error,#d33)}.mw-parser-output .cs1-visible-error{color:var(--color-error,#d33)}.mw-parser-output .cs1-maint{display:none;color:#085;margin-left:0.3em}.mw-parser-output .cs1-kern-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right{padding-right:0.2em}.mw-parser-output .citation .mw-selflink{font-weight:inherit}@media screen{.mw-parser-output .cs1-format{font-size:95%}html.skin-theme-clientpref-night .mw-parser-output .cs1-maint{color:#18911f}}@media screen and (prefers-color-scheme:dark){html.skin-theme-clientpref-os .mw-parser-output .cs1-maint{color:#18911f}}</style><cite id="CITEREFAlexander2003" class="citation cs2"><a href="/wiki/Bevin_Alexander" title="Bevin Alexander">Alexander, Bevin</a> (2003), Korea: The First War We Lost, <a href="/wiki/New_York,_New_York" class="mw-redirect" title="New York, New York">New York, New York</a>: <a href="/wiki/Hippocrene_Books" title="Hippocrene Books">Hippocrene Books</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7818-1019-7" title="Special:BookSources/978-0-7818-1019-7"><bdi>978-0-7818-1019-7</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Korea%3A+The+First+War+We+Lost&rft.place=New+York%2C+New+York&rft.pub=Hippocrene+Books&rft.date=2003&rft.isbn=978-0-7818-1019-7&rft.aulast=Alexander&rft.aufirst=Bevin&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFAppleman1998" class="citation cs2">Appleman, Roy E. (1998), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20140207235336/http://www.history.army.mil/books/korea/20-2-1/toc.htm">South to the Naktong, North to the Yalu: United States Army in the Korean War</a>, <a href="/wiki/Washington,_D.C." title="Washington, D.C.">Washington, D.C.</a>: <a href="/wiki/Department_of_the_Army" class="mw-redirect" title="Department of the Army">Department of the Army</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-16-001918-0" title="Special:BookSources/978-0-16-001918-0"><bdi>978-0-16-001918-0</bdi></a>, archived from <a rel="nofollow" class="external text" href="http://www.history.army.mil/books/korea/20-2-1/toc.htm">the original</a> on 2014-02-07, retrieved 2010-12-12</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=South+to+the+Naktong%2C+North+to+the+Yalu%3A+United+States+Army+in+the+Korean+War&rft.place=Washington%2C+D.C.&rft.pub=Department+of+the+Army&rft.date=1998&rft.isbn=978-0-16-001918-0&rft.aulast=Appleman&rft.aufirst=Roy+E.&rft_id=http%3A%2F%2Fwww.history.army.mil%2Fbooks%2Fkorea%2F20-2-1%2Ftoc.htm&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFBerryGreenwood2005" class="citation cs2">Berry, F. Clifton; Greenwood, John T. (2005), Medics at War: Military Medicine From Colonial Times to the 21st Century, <a href="/wiki/Annapolis,_Maryland" title="Annapolis, Maryland">Annapolis, Maryland</a>: Naval Institute Press, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-59114-344-4" title="Special:BookSources/978-1-59114-344-4"><bdi>978-1-59114-344-4</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Medics+at+War%3A+Military+Medicine+From+Colonial+Times+to+the+21st+Century&rft.place=Annapolis%2C+Maryland&rft.pub=Naval+Institute+Press&rft.date=2005&rft.isbn=978-1-59114-344-4&rft.aulast=Berry&rft.aufirst=F.+Clifton&rft.au=Greenwood%2C+John+T.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFCatchpole2001" class="citation cs2">Catchpole, Brian (2001), The Korean War, <a href="/wiki/London,_United_Kingdom" class="mw-redirect" title="London, United Kingdom">London, United Kingdom</a>: <a href="/wiki/Robinson_Publishing" class="mw-redirect" title="Robinson Publishing">Robinson Publishing</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-84119-413-4" title="Special:BookSources/978-1-84119-413-4"><bdi>978-1-84119-413-4</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Korean+War&rft.place=London%2C+United+Kingdom&rft.pub=Robinson+Publishing&rft.date=2001&rft.isbn=978-1-84119-413-4&rft.aulast=Catchpole&rft.aufirst=Brian&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFFehrenbach2001" class="citation cs2"><a href="/wiki/T._R._Fehrenbach" title="T. R. Fehrenbach">Fehrenbach, T.R.</a> (2001), This Kind of War: The Classic Korean War History – Fiftieth Anniversary Edition, Washington D.C.: Potomac Books Inc., <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-57488-334-3" title="Special:BookSources/978-1-57488-334-3"><bdi>978-1-57488-334-3</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=This+Kind+of+War%3A+The+Classic+Korean+War+History+%E2%80%93+Fiftieth+Anniversary+Edition&rft.place=Washington+D.C.&rft.pub=Potomac+Books+Inc.&rft.date=2001&rft.isbn=978-1-57488-334-3&rft.aulast=Fehrenbach&rft.aufirst=T.R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFGough1987" class="citation cs2 cs1-prop-long-vol">Gough, Terrence J. (1987), <a rel="nofollow" class="external text" href="https://web.archive.org/web/20120302065059/http://libweb.uoregon.edu/ec/e-asia/read/MLKW.pdf">U.S. Army and Logistics in the Korean War: a Research Approach</a> (PDF), vol. CMH Pub 70-19, Washington, D.C.: Center of Military History, U.S. Army, archived from <a rel="nofollow" class="external text" href="http://libweb.uoregon.edu/ec/e-asia/read/MLKW.pdf">the original</a> (PDF) on 2012-03-02, retrieved 2010-11-13</cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=U.S.+Army+and+Logistics+in+the+Korean+War%3A+a+Research+Approach&rft.place=Washington%2C+D.C.&rft.pub=Center+of+Military+History%2C+U.S.+Army&rft.date=1987&rft.aulast=Gough&rft.aufirst=Terrence+J.&rft_id=http%3A%2F%2Flibweb.uoregon.edu%2Fec%2Fe-asia%2Fread%2FMLKW.pdf&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMahoney2001" class="citation cs2">Mahoney, Kevin (2001), Formidable Enemies: The North Korean and Chinese Soldier in the Korean War, <a href="/wiki/Novato,_California" title="Novato, California">Novato, California</a>: Presidio Press, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-89141-738-5" title="Special:BookSources/978-0-89141-738-5"><bdi>978-0-89141-738-5</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Formidable+Enemies%3A+The+North+Korean+and+Chinese+Soldier+in+the+Korean+War&rft.place=Novato%2C+California&rft.pub=Presidio+Press&rft.date=2001&rft.isbn=978-0-89141-738-5&rft.aulast=Mahoney&rft.aufirst=Kevin&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMalkasian2001" class="citation cs2">Malkasian, Carter (2001), The Korean War, <a href="/wiki/Oxford,_United_Kingdom" class="mw-redirect" title="Oxford, United Kingdom">Oxford, United Kingdom</a>: <a href="/wiki/Osprey_Publishing" title="Osprey Publishing">Osprey Publishing</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-84176-282-1" title="Special:BookSources/978-1-84176-282-1"><bdi>978-1-84176-282-1</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Korean+War&rft.place=Oxford%2C+United+Kingdom&rft.pub=Osprey+Publishing&rft.date=2001&rft.isbn=978-1-84176-282-1&rft.aulast=Malkasian&rft.aufirst=Carter&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMillett2000" class="citation cs2">Millett, Allan R. (2000), The Korean War, Volume 1, <a href="/wiki/Lincoln,_Nebraska" title="Lincoln, Nebraska">Lincoln, Nebraska</a>: <a href="/wiki/University_of_Nebraska" class="mw-redirect" title="University of Nebraska">University of Nebraska</a> Press, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-8032-7794-6" title="Special:BookSources/978-0-8032-7794-6"><bdi>978-0-8032-7794-6</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+Korean+War%2C+Volume+1&rft.place=Lincoln%2C+Nebraska&rft.pub=University+of+Nebraska+Press&rft.date=2000&rft.isbn=978-0-8032-7794-6&rft.aulast=Millett&rft.aufirst=Allan+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFMillett2010" class="citation cs2">Millett, Allan R. (2010), The War for Korea, 1950–1951: They Came from the North, <a href="/wiki/Lawrence,_Kansas" title="Lawrence, Kansas">Lawrence, Kansas</a>: University Press of Kansas, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-0-7006-1709-8" title="Special:BookSources/978-0-7006-1709-8"><bdi>978-0-7006-1709-8</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=The+War+for+Korea%2C+1950%E2%80%931951%3A+They+Came+from+the+North&rft.place=Lawrence%2C+Kansas&rft.pub=University+Press+of+Kansas&rft.date=2010&rft.isbn=978-0-7006-1709-8&rft.aulast=Millett&rft.aufirst=Allan+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFShrader1995" class="citation cs2">Shrader, Charles R. (1995), Communist Logistics in the Korean War, <a href="/wiki/Westport,_Connecticut" title="Westport, Connecticut">Westport, Connecticut</a>: Greenwood Pres, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/0-313-29509-3" title="Special:BookSources/0-313-29509-3"><bdi>0-313-29509-3</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Communist+Logistics+in+the+Korean+War&rft.place=Westport%2C+Connecticut&rft.pub=Greenwood+Pres&rft.date=1995&rft.isbn=0-313-29509-3&rft.aulast=Shrader&rft.aufirst=Charles+R.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li> <li><link rel="mw-deduplicated-inline-style" href="mw-data:TemplateStyles:r1238218222"><cite id="CITEREFVarhola2000" class="citation cs2"><a href="/wiki/Michael_J._Varhola" class="mw-redirect" title="Michael J. Varhola">Varhola, Michael J.</a> (2000), Fire and Ice: The Korean War, 1950–1953, <a href="/wiki/Mason_City,_Iowa" title="Mason City, Iowa">Mason City, Iowa</a>: <a href="/wiki/Da_Capo_Press" title="Da Capo Press">Da Capo Press</a>, <a href="/wiki/ISBN_(identifier)" class="mw-redirect" title="ISBN (identifier)">ISBN</a> <a href="/wiki/Special:BookSources/978-1-882810-44-4" title="Special:BookSources/978-1-882810-44-4"><bdi>978-1-882810-44-4</bdi></a></cite><span title="ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.genre=book&rft.btitle=Fire+and+Ice%3A+The+Korean+War%2C+1950%E2%80%931953&rft.place=Mason+City%2C+Iowa&rft.pub=Da+Capo+Press&rft.date=2000&rft.isbn=978-1-882810-44-4&rft.aulast=Varhola&rft.aufirst=Michael+J.&rfr_id=info%3Asid%2Fen.wikipedia.org%3ABattle+of+Pusan+Perimeter+logistics" class="Z3988"></li></ul> </div>    </div><noscript><img src="https://login.wikimedia.org/wiki/Special:CentralAutoLogin/start?type=1x1" alt="" width="1" height="1" style="border: none; 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