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 Air Force In South Korea Air controllers, using tactics similar to those developed in France during World War II, accompanied the advancing tank columns, supported tank commanders with aerial reconnaissance, and called in close air support missions as needed. On 26 September, General Douglas MacArthur announced the recapture of Seoul, but street fighting continued for several more days. As US forces swept North Korean troops from South Korea, aviation engineers rebuilt the airfields, beginning with Pohang, on the east coast 50 miles northeast of Taegu. USAF flying units returned on 7 October to Pohang and to other rebuilt airfields at Kimpo, near Seoul, and at