The Korean War: The Forgotten War
June 25, 1950-July 27, 1953
"By its participation in the Korean conflict the Army of the United States, in a determined effort to restore international peace and security, has been for the first time committed to battle under the flag of the United Nations. Confronted by most arduous conditions, the American soldier has fought with traditional bravery and skill against Communist aggression in Korea. He has met every test with honor." - J. Lawton Collins, U.S. Army Chief of Staff, August 16, 1949 - August 15, 1953.
On June 25, 1950, the Democratic People's Republic of Korea (North Korea) launched a surprise attack on South Korea. People in South Korea were unaware of the upcoming attack on that morning, which stated a war that would kill more than 3,000,000 lives. The war had begun with north Korean leader Kim II Song's desire to unify the peninsula under Communist rule. Before WWII, the peninsula had been one county. The UN decided to draw a line between the 38th parallel to avoid a conflict between the US and the Soviet. However, with the Soviets occupying the northern side and the US troops occupying the southern side, the two sides became increasingly different in their governing systems.
South Korea was aided by the UN troops and the US troops, lead under McArthur. North Korea held out for as long as they could, and then turned to the People's Republic of China for aid. When the UN and US troops had managed to push the DPRK troops up to the border between Manchuria and North Korea, a desperate Kim II Song turned to the Chinese. With the use of thousands of foot soldiers, the Chinese were able to push the UN and US troops back to the 38th parallel. The result was a three-year war in the peninsula, the war ending in 1953 with an armistice.
Courtesy of: http://www.mtholyoke.edu/~jeehan/summary-korewar.html