Korean War Poster featuring an image of Brig. Gen. Courtney Whitney; Gen. Douglas MacArthur, Commander in Chief of U.N. Forces; and Maj. Gen. Edward M. Almond observe the shelling of Inchon from the U.S.S. Mt. McKinley, September 15, 1950. Nutter (Army).
The Korean War, 25 June 1950 – 27 July 1953) began when North Korea invaded South Korea. The United Nations, with the United States as the principal force, came to the aid of South Korea. China came to the aid of North Korea, and the Soviet Union gave some assistance.