US Air Force B-29 Superfortresses dropping bombs on a strategic target during the Korean War. (Photo by Keystone/Getty Images). 1951

B-29s bombs exploding at a magnesium plant during the Korean War. (Photo by Keystone/Getty Images). 1953

US Marines of the UN invasion force which landed at Inchon in South Korea, advance inland during the Korean War. (Photo by Bert Hardy/Getty Images). 1950

US Marines land from assault craft and climb over the sea defences at Inchon in South Korea during the Korean War, after heavy bombardment of coastal defences by warships. (Photo by Bert Hardy/Getty Images). 1950

A civilian casualty arrives on the beach at Inchon in South Korea to see the US medical officer during the Korean War. US amphibious craft used in the invasion are in the background. (Photo by Bert Hardy/Getty Images). 1950

A US F-80 Shooting Star making a low-level attack with a napalm bomb on a storage centre at Suan, south-east of P'yongyang, during the Korean War. (Photo by Keystone/Getty Images). 1952

South Korean political prisoners at Pusan, Korea. (Photo by Picture Post/Getty Images). 1950

A United States navy Chance Vought F4U Corsair as it leaves the deck of a United States Navy aircraft carrier, operating off the coast of Korea, for a sortie against the Communist-led North Korean forces. (Photo by Keystone/Getty Images). 1952

Battle-weary American troops withdraw from Yong San in Korea. (Photo by Keystone/Getty Images). 1950

A Korean refugee and her child are watched by an American tank crew during the retreat south of US and Korean troops after the North Koreans crossed the 38th Parallel. (Photo by Haywood Magee/Picture Post/Getty Images). 1950

A street in Inchon, South Korea, after the American landing. (Photo by Bert Hardy/Picture Post/Getty Images). 7th October 1950

The beach at Inchon, South Korea, after the American landing. (Photo by Bert Hardy/Picture Post/Getty Images). 7th October 1950

South Korean political prisoners under guard at Pusan. (Photo by Bert Hardy/Picture Post/Getty Images). 1950

An American gun crew firing a 105 mm Howitzer during the Korean War, 4th August 1950. (Photo by Keystone/Hulton Archive/Getty Images)

Two soldiers of the 1st Division of the South Korean Army laying anti-tank mines during the Korean War, August 1950. (Photo by Keystone/Hulton Archive/Getty Images)