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
History of North Korea them back to a defensive line in south-east South Korea known as the Pusan Perimeter. During its brief occupation of southern Korea, the DPRK regime initiated radical social change, which included the nationalisation of industry, land reform, and the restoration of the People's Committees. According to the captured US General William F. Dean, "the civilian attitude seemed to vary between enthusiasm and passive acceptance". The United Nations condemned North Korea's actions and approved an American-led intervention force to defend South Korea. In September, UN forces landed at Inchon and retook Seoul. Under the leadership of US General Douglas Macarthur, UN