During the Korean War, U.S. Marines were withdrawing from Changjin Reservoir during the Battle of Changjin Lake when the Chinese People's Volunteer Army suffered frozen casualties due to extremely cold weather. The infiltrated Chinese People's Volunteer Army stripped clothes from some frozen corpses of their own troops.

 　　During the Korean War, U.S. Marines were at the Battle of Changjin Lake, housing all the dead as they retreated from the Changjin Reservoir. The Chinese People's Volunteer Army in particular suffered battle casualties and non-combat casualties due to the extremely cold weather. The Chinese People's Volunteer Army, which had infiltrated there, stripped clothes from some frozen corpses of its own troops. After the intervention of the Chinese People's Volunteer Army, American troops were forced to make the longest retreat in history.

　During the Battle of Changjin Lake in the Korean War, from November 27 to December 24, 1950, three corps of the 9th Army of the Chinese People's Volunteer Army fought the 10th Army of the US Army, the best armed and equipped in the world, under starving and cold conditions. With only one artillery battalion in the CPC division, no heavy tanks, and no mobilizable air force, a fierce battle was fought in the area of Jangjin Lake in North Korea with small arms, mortars, and artillery firepower. North Korean forces resisted the U.S. invasion of the North, followed by the longest withdrawal of U.S. troops in history.

　On the evening of November 27, a blizzard swept across the sky, the northwesterly winds enveloping cotton ball-sized snowflakes, which fell one after another. The temperature at night dropped to about minus 40 degrees Celsius. That night, the 9th Army Corps of the Chinese People's Volunteer Army completed its deployment around Jangjin Lake. The 20th Army took cover on the west side of Jangjin Lake, while the 27th Army ambushed U.S. forces north and northeast of Jangjin Lake.

 After the Chinese People's Volunteer Army entered the ambush against the U.S. 1st Marine Division and 7th Infantry Division, about 100,000 volunteer troops rushed into the U.S. forces like tigers descending from the mountains. The Battle of Changjin Lake broke out on November 27. After a night of fierce fighting, the American forces were surrounded by the valiant 9th Army Corps of the Chinese People's Volunteer Army. However, it was extremely difficult to eliminate the encircled American forces, which were divided into five directions, and the battle of Changjin Lake lasted for 17 days. Originally, the battle was to be a battle of encirclement and annihilation, but due to the extreme weather conditions and extremely inferior equipment, it turned into a battle of destruction.

　　During the period of the Battle of Changjin Lake, two U.S. Army divisions fell prey to the Chinese Communist Army's campaign of encirclement and annihilation, and suffered heavy casualties. After the Korean War, the U.S. Army announced its casualties: of the more than 14,000 casualties, 7,300 were frostbite, with frostbite accounting for half of the casualties. The 9th Army Corps of the Chinese People's Volunteer Army suffered more than 40,000 casualties, 28,000 of whom died of frostbite; from December 15 to 24, 1950, some 69,000 UN troops and 64,000 civilian evacuees in North Korea were evacuated from the port of Xingnan, Hamhung, North Korea.