Walton Walker backed South Korea, and China allied with the Soviet Union in what was to become the first military action of the Cold War. Shortly after 75,000 North Korean troops with tanks invaded South Korea on June 25, 1950, American air and sea forces were ordered by President Harry S. Truman to give South Korean troops support. The U.S. Eighth Army was ordered to intervene and drive the invaders back across the 38th parallel, the border between the two countries. With only four lightly equipped and poorly trained divisions, Walker began landing troops on the southeast side of the Korean peninsula
United States Forces Korea UNC and CFC by coordinating and planning among US component commands and providing US supporting forces to the CFC. As such, USFK continues to support the ROK-US Mutual Defense Treaty. In response to the North Korean attack against South Korea on 25 June 1950, the United Nations Security Council (UNSC) established the UNC as a unified command under the US in UNSC Resolution 84 on 7 July 1950. The UNC mission was to assist South Korea to repel the attack and restore international peace and security in Korea. Throughout the war, 53 nations provided support to the UNC; 16 nations