Battle of Chosin Reservoir
The Battle of Chosin Reservoir, also known as the Chosin Reservoir Campaign or the Changjin Lake Campaign (Korean: 장진호 전투; Chinese: 长津湖战役; pinyin: Cháng Jīn Hú Zhànyì),[d] was a decisive battle in the Korean War. Shortly after the People's Republic of China entered the conflict, the People's Volunteer Army 9th Army[a] infiltrated the northeastern part of North Korea and surprised the US X Corps at the Chosin Reservoir area. A brutal 17 day battle in freezing weather soon followed. In the period between 27 November and 13 December 1950, 30,000 United Nations (UN) troops (nicknamed "The Chosin Few") under the command of Major General Edward Almond were encircled by approximately 67,000 Chinese troops under the command of Song Shi-Lun. Although Chinese troops managed to surround and outnumber the UN forces, they were able to break out of the encirclement while inflicting crippling losses on the Chinese, allowing them to successfully withdraw in good order. The evacuation of the X Corps from the port of Hungnam marked the complete withdrawal of UN troops from North Korea.
- 1 Background
- 2 Prelude
- 3 Battle
- 4 Aftermath
- 5 See also
- 6 Notes
- 7 References
- 8 Further reading
- 9 External links
By mid-1950 after the successful landing at Inchon by the US X Corps and the subsequent destruction of the Korean People's Army, the Korean War appeared to be all but over. United Nations (UN) forces advanced rapidly into North Korea with the intention of reuniting North and South Korea before the end of 1950. North Korea is divided through the center by the impassable Taebaek Mountains, which separated the UN forces into two groups. The US Eighth Army advanced north through the western coast of the Korean Peninsula, while the Republic of Korea (ROK) I Corps and the US X Corps advanced north on the eastern coast.
At the same time the People's Republic of China entered the conflict after issuing several warnings to the United Nations. On 19 October 1950, large formations of Chinese troops, dubbed the People's Volunteer Army (PVA), secretly crossed the border and into North Korea. One of the first Chinese units to reach the Chosin Reservoir area was the PVA 42nd Corps, and it was tasked with stopping the eastern UN advances. On 25 October, the advancing ROK I Corps made contact with the Chinese and halted at Funchilin Pass, south of the Chosin Reservoir. After the landing at Wonsan, the US 1st Marine Division of the X Corps engaged the defending PVA 124th Division on 2 November, and the ensuing battle caused heavy casualties among the Chinese. On 6 November, the PVA 42nd Corps ordered a retreat to the north with the intention of luring the UN forces into the Chosin Reservoir. By 24 November, the 1st Marine Division occupied both Sinhung-ni[e] on the eastern side of the reservoir, and Yudami-ni on the west side of the reservoir.
Faced with the sudden attacks by Chinese forces in the Eighth Army sector, General Douglas MacArthur ordered the Eighth Army to launch the Home-by-Christmas Offensive. To support the offensive, MacArthur ordered the X Corps to attack west from the Chosin Reservoir and to cut the vital Manpojin—Kanggye—Huichon supply line. As a response, Major General Edward M. Almond, commander of the US X Corps, formulated a plan on 21 November. It called for the US 1st Marine Division to advance west through Yudami-ni, while the US 7th Infantry Division would provide a regimental combat team to protect the right flank at Sinhung-ni. The US 3rd Infantry Division would also protect the left flank while providing security in the rear area. By then the X Corps was stretched thin along a 400 miles (640 km) front.
Surprised by the Marine landing at Wonsan, China's Chairman Mao Zedong called for the immediate destruction of the ROK Capital Division, ROK 3rd Infantry Division, US 1st Marine Division, and US 7th Infantry Division in a telegraph to Commander[f] Song Shi-Lun of the PVA 9th Army on 31 October. Under Mao's urgent orders, the 9th Army was rushed into North Korea on 10 November. Undetected by UN intelligence, the 9th Army quietly entered the Chosin Reservoir area on 17 November, with the 20th Corps of the 9th Army relieving the 42nd Corps near Yudami-ni.
Location, terrain and weather
Chosin Reservoir is a man-made lake located in the northeast of the Korean peninsula. The name Chosin is the Japanese pronunciation of the Korean place name Changjin, and the name stuck due to the outdated Japanese maps used by UN forces. The battle's main focus was around the 78 miles (126 km) long road that connects Hungnam and Chosin Reservoir, which served as the only retreat route for the UN forces. Through these roads, Yudami-ni and Sinhung-ni,[e] located at the west and east side of the reservoir respectively, are connected at Hagaru-ri. From there, the road passes through Koto-ri and eventually leads to the port of Hungnam. The area around the Chosin Reservoir was sparsely populated.
The battle was fought over some of the roughest terrain during some of the harshest winter weather conditions of the Korean War. The road was created by cutting through the hilly terrain of Korea, with steep climbs and drops. Dominant peaks, such as the Funchilin Pass and the Toktong Pass, overlook the entire length of the road. The road's quality was poor, and in some places it was reduced to a one lane gravel trail. On 14 November, a cold front from Siberia descended over the Chosin Reservoir, and the temperature plunged to as low as −35 °F (−37 °C). The cold weather was accompanied by frozen ground, creating considerable danger of frostbite casualties, icy roads, and weapon malfunctions. Medical supplies froze; morphine syrettes had to be defrosted in a medic's mouth before they could be injected; frozen blood plasma was useless on the battlefield. Even cutting off clothing to deal with a wound risked gangrene and frostbite. Batteries used for the Jeeps and radios did not function properly in the temperature and quickly ran down. The lubrication in the guns gelled and rendered them useless in battle. Likewise, the springs on the firing pins would not strike hard enough to fire the round, or would jam.
Forces and strategies
Although the 1st Marine Division landed at Wonsan as part of Almond's US X Corps, Almond and Major General Oliver P. Smith of the 1st Marine Division shared a mutual loathing of each other that dated back to a meeting before the landing at Inchon, during which Almond had spoken of how easy amphibious landings are even though he had never been involved in one. Smith believed that there were large numbers of Chinese forces in North Korea despite the fact that higher headquarters in Tokyo had said otherwise, while Almond felt Smith was overly cautious. The mutual distrust between the two commanders made Smith slow the 1st Marine Division's advance towards the Chosin Reservoir against Almond's instructions. Along the way Smith established supply points and airfields at Hagaru-ri and Koto-ri.
While the US X Corps was pushing towards the reservoir, the Chinese formulated their strategy based on their experiences in the Chinese Civil War. Working from the assumption that only a light UN presence would be at the reservoir, the 9th Army was to first destroy the UN garrisons at Yudami-ni and Sinhung-ni, then push towards Hagaru-ri. Believing that the bulk of the US X Corps would scramble to rescue the destroyed units, the 9th Army would then block and trap the main UN forces on the road between Hagaru-ri and Hungnam. The 9th Army initially committed six divisions for the battle, with most of the forces concentrated at Yudami-ni and Sinhung-ni.
The flaw in the Chinese plan was a lack of accurate intelligence on the UN forces. Although the US X Corps was stretched thin over northeast Korea, the slow Marine advance allowed the bulk of the US 1st Marine Division, including the 5th, 7th and 11th Marines, to be concentrated at Yudami-ni. Conversely, the strategically important Hagaru-ri, which contained an airfield and a supply dump, was not a priority for the Chinese despite being lightly defended by the 1st and the 7th Marines. Only the Regimental Combat Team 31, an understrength and hastily formed regimental combat team of the US 7th Infantry Division, was thinly spread along the eastern bank of the reservoir. Those units would later take the brunt of the Chinese assaults. As for the UN strength, the 1st Marine Division had an effective strength of 25,473 men at the start of the battle, and it was further reinforced by the British 41 Royal Marine Commando and the equivalent strength of two regiments from the 3rd and the 7th Infantry Divisions. Thus the UN forces had an approximate strength of 30,000 during the course of the battle. The UN forces at Chosin were also supported by one of the greatest concentrations of air power during the Korean War, in which the 1st Marine Air Wing stationed at Yonpo Airfield and five aircraft carriers from the US Navy Task Force 77 were able to launch 230 sorties daily to provide close air support during the battle, while the US Air Force Far East Combat Cargo Command in Japan reached the capacity of airdropping 250 tons of supplies per day to resupply the trapped UN forces.
Although the 9th Army was one of China's elite formations composed of veterans and former POWs from the Huaihai Campaign, several deficiencies hampered its ability during the battle. Initially the 9th Army was intended to be outfitted in Manchuria during November, but Mao suddenly ordered it into Korea before that could happen. As the result, the 9th Army received almost no winter gear for the harsh Korean winter. Similarly, poor logistics forced the 9th Army to abandon heavy artillery, while working with little food and ammunition. The food shortage forced the 9th Army to station a third of its strength away from the Chosin Reservoir, and starvation and exposure soon broke out among the Chinese units as foraging was not an option at the sparsely populated reservoir. By the end of the battle, more Chinese troops died from the cold than from combat and air raids. As for the Chinese strength, it is normally assumed that the Chinese had 120,000 troops for the battle, due to the fact that the 9th Army were composed of 12 divisions with a nominal strength of 10,000 men per division. But during the course of the battle, the 9th Army employed only 10 divisions, while all divisions were at 65 to 70 percent strength at the start of the battle. Thus the actual Chinese strength for the battle was approximately 67,000.
On the night of 27 November, the PVA 20th and 27th Corps of the 9th Army launched multiple attacks and ambushes along the road between the Chosin Reservoir and Koto-ri. At Yudam-ni, the 5th, 7th and 11th Marines were surrounded and attacked by the PVA 59th, 79th and 89th Division. Similarly, RCT-31 was isolated and ambushed at Sinhung-ni by the PVA 80th and the 81st Division. Finally, the PVA 60th Division surrounded elements of the 1st Marines at Kotor-ri from the north. Caught by complete surprise, the UN forces were cut off at Yudam-ni, Sinhung-ni, Hagaru-ri and Kotor-ri by 28 November.
Actions at Yudam-ni
Acting on Almond's instruction, Smith ordered the 5th Marines to attack west toward Mupyong-ni on 27 November. The attack was soon stalled by the PVA 89th Division and forced the Marines to dig in on the ridges surrounding Yudam-ni. As night came, three Chinese regiments of the 79th Division attacked the ridges on the north and northwest of Yudam-ni, hoping to annihilate the garrison in one stroke. Close range fighting soon developed as the attackers infiltrated Marine positions, but the 5th and 7th Marines held the line while inflicting heavy casualties to the Chinese. As day broke on 28 November, the Chinese forces and the American defenders were locked in a stalemate around the Yudam-ni perimeter.
While the battle was underway at Yudam-ni, the PVA 59th Division blocked the road between Yudam-ni and Hagaru-ri by attacking the defending Charlie and Fox Companies of the 7th Marines. The successful assault forced Charlie Company to retreat into Yudam-ni which left Fox Company trapped in Toktong Pass, a vital pass that controlled the road. On 29 November, several efforts by the 7th Marines failed to rescue Fox Company despite inflicting heavy casualties on the Chinese. Aided by artillery from Hagaru-ri and Marine Corsair fighters, Fox Company managed to hold out for five days while enduring constant attacks by the PVA 59th Division.
After the heavy losses suffered by the PVA 79th Division at Yudam-ni, 9th Army headquarters realized that the bulk of the 1st Marine Division was stationed at Yudam-ni, with a garrison strength that was double the initial estimate. Believing that any further assaults would be futile, Song Shi-Lun ordered the 9th Army to switch their main attacks toward Sinhung-ni and Hagaru-ri, leaving Yudam-ni alone from 28 November to 30 November. At the same time, the US Eighth Army on the Korean western front was forced into full retreat at the Battle of the Ch'ongch'on River, and MacArthur ordered Almond to withdraw the US X Corps to the port of Hungnam. Acting on the instruction of Almond and Smith, Lieutenant Colonel Raymond L. Murray and Colonel Homer L. Litzenberg, commanders of the 5th and 7th Marines, respectively, issued a joint order to break out from Yudam-ni to Hagaru-ri on 30 November. Faced with tough fighting between the blocking Chinese divisions and the withdrawing Marines, Smith remarked: "Retreat, hell! We're not retreating, we're just advancing in a different direction."
For the breakout, the Marines formed into a convoy with a single M4A3 Sherman tank as the lead. The plan was to have 3rd Battalion, 5th Marines (3/5) as the vanguard of the convoy, with three battalions covering the rear. At the same time, 1st Battalion, 7th Marines (1/7) would attack towards Fox Company in order to open the road at Toktong Pass. To start the breakout, 3rd Battalion, 7th Marines (3/7) had to first attack south and capture Hill 1542 and Hill 1419 in order to cover the road from Chinese attacks. The breakout was carried out under the air cover of the 1st Marine Air Wing.
On the morning of 1 December, 3rd Battalion, 7th Marines (3/7) engaged the PVA 175th Regiment of the 59th Division at Hill 1542 and Hill 1419. The tenacious Chinese defenders soon forced the Marines to dig in on the slopes between the road and the peaks when the convoy passed 3/7's position by the afternoon. With Hagaru-ri still not captured, the PVA High Command scrambled the 79th Division to resume attacks on Yudam-ni while the 89th Division rushed south towards Koto-ri. The Chinese struck at night, and the ferocious fighting forced the rear covering forces to call in night fighters to suppress the attacks. The fighting lasted well into the morning of 2 December until all the Marines managed to withdraw from Yudam-ni.
At the same time, 1st Battalion, 7th Marines (1/7) also tried to break the Chinese blockade at Hill 1419 on 1 December. Despite being badly reduced by combat, hunger and frostbite, the PVA 59th Division sent in its last five platoons and refused to yield. As night approached, 1/7 finally captured the peak and started to march through the hills on the east side of the road. Relying on the element of surprise, 1/7 managed to destroy several Chinese positions along the road. On the morning of 2 December, a joint attack by Fox Company and 1/7 secured the Toktong Pass, thus opening the road between Yudam-ni and Hagaru-ri.
Although the road had been opened between Yudam-ni and Hagaru-ri, the convoy still had to fight through the numerous Chinese positions on the hills overlooking the road. On the first night of the retreat, the Chinese struck the convoy in force and inflicted heavy casualties upon 3rd Battalion, 5th Marines (3/5). Although strong air cover suppressed most of the Chinese forces for the rest of the march, the cold weather, harassing fire, raiding parties, and road blocks slowed the retreat to a crawl while inflicting numerous casualties. Despite those difficulties, the convoy reached Hagaru-ri in an orderly fashion on the afternoon of 3 December, with the withdrawal completed on 4 December.
East of the reservoir
Regimental Combat Team 31 (RCT-31), later known as "Task Force Faith", was a hastily formed regimental combat team from the 7th Infantry Division that guarded the right flank of the Marine advance towards Mupyong-ni. Before the battle, RCT-31 was spread thin with main elements separated on the hills north of Sinhung-ni, the inlet west of Sinhung-ni, and the town of Hudong-ni south of Sinhung-ni. Although the Chinese believed RCT-31 to be a reinforced regiment, the task force was actually under strength with one battalion missing, due to the bulk of the 7th Infantry Division being scattered over northeast Korea.
On the night of 27 November, three regiments from the 80th Division attacked the northern hills and the inlets, completely surprising the defenders. The ensuing battle inflicted heavy casualties on the 1st Battalion, 32nd Infantry to the north of Sinhung-ni, while the 57th Field Artillery Battalion and the 3rd Battalion, 31st Infantry were almost overrun at the inlet. The Chinese also sent the 242nd Regiment of the 81st Division towards Hill 1221, an undefended hill that controlled the road between Sinhung-ni and Hudong-ni. As the night's fighting ended, RCT-31 was separated into three elements.
Believing that the defenders were completely destroyed at the inlet, the Chinese stopped their attacks and proceeded to loot the US positions for food and clothing. As the morning came on 28 November, the 3rd Battalion, 31st Infantry counterattacked the PVA 239th Regiment at the inlet, sending the surprised Chinese back in a complete rout. In the afternoon, Almond flew into the perimeter of RCT-31, convinced that RCT-31 was strong enough to begin its attack north and deal with whatever "remnants" of Chinese forces that were in their way. Almond ordered Colonel Allan D. Maclean, the commander of RCT-31, to resume the offensive north while presenting Silver Stars to three of Maclean's officers. In disgust, Lieutenant Colonel Don C. Faith, Jr., the commander of the 1st Battalion, 32nd Infantry, threw his medal into the snow.
On the night of 28 November, the PVA 80th Division attacked again with three regiments. At the inlet, the Chinese assault became a disaster as communications broke down while devastating fire from the anti-aircraft (AA) guns attached to the 57th Field Artillery Battalion swept the Chinese ranks.[g] In the aftermath of the fighting, the PVA 238th and the 239th Regiment together had less than 600 soldiers. The attacks by PVA 240th Regiment, on the other hand, forced Maclean to order a retreat from the northern hills towards the inlet. On 29 November, the 1st Battalion managed to break through the Chinese blockade and reached the inlet, but Maclean disappeared as he mistook some Chinese soldiers as American.[h] The Chinese finally stopped their attacks on the night of 29 November while waiting for fresh reinforcements.
While RCT-31 was under siege, Almond finally instructed the 1st Marine Division to rescue RCT-31 by breaking out of Yudam-ni—an impossible order for Smith to implement. Only the 31st Tank Company tried to rescue RCT-31 by attacking Hill 1221, but without infantry support, the two armored attacks on 28 and 29 November were stalled by slippery roads, rough terrain, and close infantry assaults. By 30 November the US forces evacuated Hudong-ni in order to defend Hagaru-ri, leaving the rest of RCT-31 completely stranded.
On 30 November, Major General David G. Barr, the commander of the 7th Infantry Division, flew into the Sinhung-ni inlet and met with Faith, who by now had assumed command of RCT-31. Faith expressed the difficulties for a breakout, particularly the 500 wounded that RCT-31 had to carry. On the same day, the PVA 94th Division[i] arrived as reinforcements for the 80th Division. By midnight, four Chinese regiments renewed their attacks and Zhan Danan, the commander of the 80th Division, ordered the complete destruction of RCT-31 before dawn. Again, the 57th Battalion's AA guns held the Chinese at bay, but the shell supplies were running desperately low. On the day of 1 December, Faith finally ordered RCT-31 to breakout from Sinhung-ni and withdraw to Hagaru-ri.
The breakout began as soon as the weather allowed the 1st Marine Air Wing to provide air cover on 1 December. As the soldiers formed a convoy and tried to leave the perimeter, the PVA 241st Regiment immediately swarmed over the American forces, with three other regiments closing in. Left with no choice, the covering aircraft dropped napalm right in front of RCT-31, causing casualties among both Chinese and US troops. The resulting firestorm wiped out the blocking Chinese company, allowing the convoy to advance. As the front of RCT-31 made their way forward, heavy small arms fire caused many members of the rear guard to seek shelter below the road instead of protecting the trucks. Chinese fire also killed or wounded those already in the trucks as well as the drivers, who viewed the job as a form of suicide. Slowly, the convoy approached a roadblock under Hill 1221 in the late afternoon. Several parties tried to clear Hill 1221, but after taking part of the hill, the leaderless soldiers continued out onto the frozen reservoir instead of returning to the column. As Faith led an assault on the roadblock, he was hit by a Chinese grenade and subsequently died of his wounds. The convoy managed to fight past the first road block, but as it reached the second at Hudong-ni, RCT-31 disintegrated under Chinese attacks. About 1,050 soldiers out of the original 2,500 managed to reach Hagaru-ri, and only 385 survivors were deemed able-bodied. The remnants of RCT-31 were formed into a provisional army battalion for the rest of the battle.
Actions at Hagaru-ri
To support the Marine attack towards Mupyong-ni, Hagaru-ri became an important supply dump with an airfield under construction. Smith and 1st Marine Division headquarters were also located at Hagaru-ri. With the bulk of the 1st Marine Division gathered at Yudam-ni, Hagaru-ri was lightly defended by two battalions from the 1st and 7th Marines, the rest of the garrison being composed of engineers and rear support units from both the Army and the Marine Corps.
The original Chinese plan called for the 58th Division to attack Hagaru-ri on the night of 27 November, but the division became lost in the countryside due to the outdated Japanese maps it used. It was not until the dawn of 28 November that the 58th Division arrived at Hagaru-ri. Meanwhile, from the fighting and ambushes that had occurred the previous night, the garrison at Hagaru-ri noticed the Chinese forces around them. Lieutenant Colonel Thomas L. Ridge, commander of 3rd Battalion, 1st Marines (3/1), predicted the Chinese attack would come on the night of 28 November. Almost everyone, including rear support units with little combat training, was pressed into the front line due to the manpower shortage, and the entire perimeter was on full alert by 21:30.
It was not long before the PVA 173rd Regiment attacked the western and the southern perimeter, while the 172nd Regiment struck the hills on the northern perimeter. Despite the preparations, the understrength garrison was overwhelmed, with the Chinese opening several gaps in the defenses and reaching the rear areas. The resulting chaos, however, caused a breakdown in discipline among the Chinese soldiers, who began looting food and clothing instead of exploiting the situation. The defending Americans managed to destroy the Chinese forces in counterattacks, while a breakdown of communications between the Chinese regiments allowed the gaps to close. When the fighting stopped, the Chinese had only gained the East Hill on the northern perimeter. Another attack was planned for the night of 29 November, but air raids by VMF-542 broke up the Chinese formations before it could be carried out.
Given the critical manpower shortage at Hagaru-ri, Smith ordered a task force to be sent north from Koto-ri to open the road south of Hagaru-ri. In response, a task force was formed with 921 troops from the 41 Royal Marine Commando, G Company of the 1st Marines and B Company of the 31st Infantry. The task force was dubbed "Task Force Drysdale" after its commander Lieutenant Colonel Douglas B. Drysdale, who also commanded 41 Commando. On the afternoon of 29 November, Task Force Drysdale pushed north from Koto-ri while under constant attack from the PVA 60th Division. The task force's harrowing experience later earned the road the nickname "Hell Fire Valley". As the Chinese attacks dragged on, the task force became disorganized, and a destroyed truck in the convoy later split the task force into two segments. Although the lead segment of the task force fought its way into Hagaru-ri on the night of 29 November, the rear segment was destroyed. Despite suffering 159 wounded and 162 dead and missing, the task force managed to bring in 300 badly needed infantrymen for the defense at Hagaru-ri.
As more reinforcements arrived from Hudong-ni on 30 November, the garrisons attempted to recapture the East Hill. All efforts failed despite the destruction of a Chinese company. When darkness settled, the PVA 58th Division gathered its remaining 1,500 soldiers in a last-ditch attempt to capture Hagaru-ri. The reinforced defenders annihilated most of the attacking forces, with only the defences around the East Hill giving way. As the Chinese tried to advance from the East Hill, they were cut down by the 31st Tank Company.
By 1 December, the PVA 58th Division was virtually destroyed, with the remainder waiting for reinforcements from the 26th Corps of the 9th Army. But much to the frustration of Song Shi-Lun, the 26th Corps did not arrive before the Marines broke out of Yudam-ni. The airfield was opened to traffic on 1 December, allowing UN forces to bring in reinforcements and to evacuate the dead and the wounded. With the Marines at Yudam-ni completing their withdrawal on 4 December, the trapped UN forces could finally start their breakout towards the port of Hungnam.
After a short period of rest, the breakout began on 6 December with the 7th Marines as the vanguard of the retreating column while the 5th Marines covered the rear. At the same time, the much-delayed PVA 26th Corps arrived at Hagaru-ri with its 76th and 77th Division relieving the 58th and 60th Divisions. As the 7th Marines pushed aside the PVA 76th Division south of Hagaru-ri, the 5th Marines took over the Hagaru-ri perimeter and recaptured the East Hill from the 76th Division. In a last effort to stop the breakout, the customary Chinese night attack returned with the 76th and 77th Division striking the Hagaru-ri perimeter from all directions. The Marines repulsed the Chinese attacks, inflicting heavy casualties.
Meanwhile, the 7th Marines opened the road between Hagaru-ri and Koto-ri by capturing the high ground surrounding the road. But as soon as the Marines pulled out, the 77th Division returned to the peaks and attacked the column. Chaotic fighting broke out within the column and the retreat was slowed to a crawl. The Marine night fighters, however, returned to subdue the Chinese forces, and the fighting destroyed most of the blocking troops. On 7 December, the rest of the column managed to reach Koto-ri with little difficulty with the last elements arrived at Koto-ri that night.
After the failure of the 26th Corps at Hagaru-ri, the PVA High Command ordered the 26th and the 27th Corps to chase the escaping UN force with the 20th Corps blocking the escape route. But with most of the 20th Corps destroyed at Yudam-ni and Hagaru-ri, the only forces between Koto-ri and Hungnam were the remnants of the 58th and the 60th Divisions. In desperation, Song Shi-Lun ordered these troops to dig in at Funchilin Pass while blowing up the vital treadway bridge, hoping the terrain and obstacles would allow the 26th and the 27th Corps to catch up with the retreating UN forces. The PVA 180th Regiment that occupied Hill 1081 blew up the original concrete bridge and two improvised replacements in succession, believing the bridge was rendered irreparable. In response, 1st Battalion, 1st Marines (1/1) attacked Hill 1081 from the south, and the hill was captured on 9 December after the defenders fought to the last man. At the same time, the 7th Marines and RCT-31 attacked the treadway bridge from the north, only to encounter defenders that were already frozen in their foxholes.
With the path to Hungnam blocked at Funchilin Pass, eight C-119 Flying Boxcars flown by the US 314th Troop Carrier Wing were used to drop portable bridge sections by parachute. The bridge, consisting of eight separate 18 ft (5.5 m) long, 2,900 lb (1,300 kg) sections, was dropped one section at a time, using a 48 ft (15 m) parachute on each section. Four of these sections, together with additional wooden extensions were successfully reassembled into a replacement bridge by Marine Corps combat engineers and the US Army 58th Engineer Treadway Bridge Company on 9 December, enabling UN forces to proceed. Outmaneuvered, the PVA 58th and 60th Divisions still tried to slow the UN advance with ambushes and raids, but after weeks of non-stop fighting, the two Chinese divisions combined had only 200 soldiers left. The last UN forces left Funchilin Pass by 11 December.
One of the last engagements during the withdrawal was an ambush at Sudong by the pursuing PVA 89th Division, which Task Force Dog of the 3rd Infantry Division repulsed with little difficulty. The trapped UN forces finally reached the Hungnam perimeter by 21:00 on 11 December.
Evacuation at Hungnam
By the time the UN forces arrived at Hungnam, MacArthur had already ordered the evacuation of the US X Corps on 8 December in order to reinforce the US Eighth Army, which by then was badly depleted and retreating rapidly towards the 38th parallel. Following his orders, the ROK I Corps, the ROK 1st Marine Regiment, the US 3rd Infantry Division and the US 7th Infantry Division had also set up defensive positions around the port. Some skirmishes broke out between the defending US 7th, 17th and 65th Infantry and the pursuing PVA 27th Corps, but against the strong naval fire support provided by US Navy Task Force 90, the badly mauled 9th Army was in no shape to approach the Hungnam perimeter. In what US historians called the "greatest evacuation movement by sea in US military history", a 193-ship armada assembled at the port and evacuated not only the UN troops, but also their heavy equipment and roughly a third of the Korean refugees. One Victory ship, the SS Meredith Victory evacuated 14,000 refugees. The last UN unit left at 14:36 on 24 December, and the port was destroyed to deny its use to the Chinese and North Korean forces. The PVA 27th Corps entered Hungnam on the morning of 25 December.
While the US X Corps was being evacuated from the eastern front, the US Eighth Army had already retreated to the 38th parallel on the western front in the aftermath of the Battle of the Ch'ongch'on River. With the entire UN front collapsing, the race to the Yalu was ended with the communist forces of China recapturing much of North Korea. The Korean War would drag on for another two and a half years before the armistice was signed on 27 July 1953. Besides the loss of North Korea, the US X Corps and the ROK I Corps later reported a total of 10,495 battle casualties, of which 4,385 were from the US Marines, 3,163 were from the US Army, 2,812 were from South Koreans attached to American formations and 78 were from the British Royal Marines. Outside of the combat losses, the 1st Marine Division also reported 7,338 non-battle casualties due to the cold weather.
Despite the losses, the US X Corps preserved much of its strength. About 105,000 soldiers, 98,000 civilians, 17,500 vehicles, and 350,000 tons of supplies were shipped from Hungnam to Pusan, and they would later rejoin the war effort in Korea. Smith was credited for saving the US X Corps from destruction, while the 1st Marine Division, the 41 Royal Marine Commando and the Army's RCT-31 were awarded the Presidential Unit Citation for their tenacity during the battle. Fourteen Marines, two Soldiers and one Navy pilot received the Medal of Honor, and all of the UN troops that served at Chosin were later honored with the nickname "The Chosin Few". On 15 September 2010, the Veterans of the Korean War Chosin Reservoir Battle memorial was unveiled by the United States Marine Corps Commandant General James T. Conway at Camp Pendleton.
China was also catapulted into the status of a major military power following the victory at Chosin, but the victory came with a staggering cost. With the escape of the US X Corps and the ROK I Corps, Mao's vision for Chosin was not realized, and the failure caused Song Shi-Lun to offer his resignation. At the same time, heavy casualties caused by both combat and poor logistical support destroyed much of the eight elite divisions under the 20th and the 27th Corps. Of those eight divisions, two divisions were forced to disband, and not until March 1951 did the 9th Army return to its normal strength and become combat effective. With the absence of nearly 40 percent of the Chinese forces in Korea in early 1951, the heavy Chinese losses at Chosin ultimately enabled the UN forces to maintain a foothold in Korea.
During the battle, UN casualties were buried at temporary grave sites along the road. Operation Glory took place from July to November 1954, during which the dead of each side were exchanged. The remains of 4,167 US Soldiers and Marines were exchanged for 13,528 North Korean and Chinese dead. In addition, 546 civilians who died in UN prisoner of war camps were turned over to the South Korean government. After Operation Glory, 416 Korean War "unknowns" were buried in the National Memorial Cemetery of the Pacific. According to a Defense Prisoner of War/Missing Personnel Office (DPMO) white paper, 1,394 names were also transmitted during "Operation Glory" from the Chinese and North Koreans, of which 858 proved to be correct. The 4,167 returned remains were found to be 4,219 individuals, of whom 2,944 were found to be Americans, with all but 416 identified by name. Of the 239 Korean War unaccounted for, 186 are not associated with the Punchbowl unknowns.[k] From 1990 to 1994 North Korea excavated and returned more than 208 sets of remains which possibly include 200 to 400 US servicemen, but very few have been identified due to the co-mingling of remains. From 2001 to 2005, more remains were recovered from the Chosin Battle site, and around 220 were recovered near the Chinese border between 1996 to 2006.
- History of the People's Liberation Army
- History of the United States Army
- History of the United States Marine Corps
- In Chinese military nomenclature, the term "Army" (军) means Corps, while the term "Army Group" (集团军) means Army.
- The 1st Marine Division reported 604 killed, 114 dead of wounds, 192 missing, 3,485 wounded and 7,338 non-battle casualties. However, US X Corps disputed the number by only recording 393 killed, 2,152 wounded and 76 missing for the 1st Marine Division. This number is calculated by inserting the 1st Marine Division's casualty data into the X Corps' total casualty report. See Appleman 1990, pp. 345–347 and Montross & Canzona 1992, pp. 381–382.
- This number is the total number of replacements requested by the 9th Army to reconstitute itself, which includes units that were not involved the fighting. See Roe 2000, p. 394.
- Official Chinese sources refer to this battle as the Second Phase Campaign Eastern Sector (第二次战役东线). The Western Sector is the Battle of the Ch'ongch'on River.
- The town of Sinhung-ni referred to in this article should not be confused with another identically named town located at south of Yudami-ni on the west side of Chosin Reservoir. See Appleman 1990, pp. 30, 32, 221, 376.
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- RCT-31's anti-aircraft guns were from D Battery, 15th Antiaircraft Battalion, which was attached to the 57th Field Artillery Battalion during the entire battle. See Appleman 1990, p. 82.
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|Wikimedia Commons has media related to Battle of Chosin Reservoir.|
- "Chosin Reservoir: Epic of Endurance". Korean War Educator. 2007-01-23. Retrieved 2007-12-16.
- Stewart, Richard W. The Korean War: The Chinese Intervention. United States Army Center of Military History. CMH Pub 19-8. Retrieved 2007-01-10.
- Chosin Veterans website
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