South Korean owners who run factories in the stalled South Korea and North Korea's joint Kaesong Industrial Complex, and workers discuss each others just outside of military barricades set up on Unification Bridge near the border village of Panmunjom, which has separated the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Thursday, May 30, 2013

A South Korean military vehicle passes by gates leading to the North Korean city of Kaesong at the customs, immigration and quarantine office near the border village of Panmunjom, which has separated the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Monday, April 8, 2013. A top South Korean national security official said Sunday that North Korea may be setting the stage for a missile test or another provocative act with its warning that it soon will be unable to guarantee diplomats' safety in Pyongyang. But he added that the North's clearest objective is to extract concessions from Washington and Seoul. (AP Photo/Lee Jin-man)

An adopted Korean war orphan, Kang Koo Ri, watches television in his new home in Los Angeles in 1956.

1950 | Early in the Korean War, American Marines march through bitter cold down a canyon road they dubbed "Nightmare Alley" during a grim retreat from the Chosin Reservoir. Originally published in the December 25, 1950, issue of LIFE.

Not originally published in LIFE. Fighter jets, F-86 Sabres, from the Fifth Air Force in Korea, 1953. The Korean War was the first conflict in which the Sabre saw action.

A visitor looks at a scene from the Korean war in the Panoramic Painting Gallery at the Museum to Commemorate the War to Resist American Aggression and Aid Korea, in Dandong, China, April 7.

Chaplain (Capt.) Emil Kapaun celebrating Mass during the Korean War using the hood of a Jeep as his altar, Oct. 7, 1950.

A visitor looks at a scene from the Korean war in the Panoramic Painting Gallery at the Museum to Commemorate the War to Resist American Aggression and Aid Korea, in Dandong, China, April 7, 2013.

The last American to die before the Korean War truce was signed -- a 22-year-old Marine Corporal killed by a Chinese mortar.

Not originally published in LIFE. Short Creek raid, Arizona, 1953. Pictured: Joseph Smith Jessop, 84, a founder of the Short Creek community; his son Tom and his nephew George, both Korean War veterans.

American troops read comic books during the Korean War, 1951.

North Koreans celebrate the anniversary of their 'victory' in the Korean War stalemate

A North Korean soldier stands at their military guard post near the border village of Panmunjom, which has separated the two Koreas since the Korean War, in Paju, north of Seoul, South Korea, Sunday, April 7, 2013.

A Chinese soldier on a battlefield with a burial detail, searching for bodies, after the Korean War cease-fire, objecting to being photographed, 1953.

John Ploch, an imprisoned American who had not been reported as a POW by the North Koreans during the Korean War, sits in dazed disbelief as he is processed during a prisoner exchange, 1953.

A Turkish soldier and a young girl look at an American comic book during the Korean War, 1951.

A North Korean soldier contemptuously sticks out his tongue at LIFE photographer Joe Scherschel on the second day of cease-fire talks during the Korean War, 1951.

Gen. Douglas MacArthur roars orders from the bridge of the flagship USS Mount McKinley during an assault on the Inchon beachheads during the Korean War, 1950.

A member of the South Korean National Police holds the severed head of a North Korean communist guerrilla during the Korean War, 1952.

A dazed, hooded Marine clutches a can of food during his outfit's retreat from the Chosin Reservoir during the Korean War, December 1950.

North Korean leader Kim Jong-Un (C) visits the Wolnae Islet Defence Detachment in the western sector of the front line, which is near Baengnyeong Island of South Korea March 11, 2013 in this picture released by the North's official KCNA news agency in Pyongyang March 12, 2013. South Korea and U.S. forces are conducting large-scale military drills, while the North is also gearing up for a massive military exercise. North Korea has accused the U.S. of using the military drills in the South as a launch pad for a nuclear war and has said to scrap the armistice with the U.S. that ended the 1950-53 Korean War.