Twentieth Air Force Bombardment Group, remaining at North Field, Guam as its only operational organization. In 1949, budget reductions forced the realignment and consolidation of Air Force units in the pacific, and the mission of Twentieth Air Force became the defense of the Ryukyu Islands and was reassigned to Kadena AB, Okinawa. It commanded the following units: On 27 June 1950, the United Nations Security Council voted to assist the South Koreans in resisting the invasion of their nation by North Korea. President Harry S. Truman authorized General Douglas MacArthur (commander of the US occupying forces in Japan) to commit units to the
United States Air Force In South Korea 80 miles north of the 38th parallel. Naval air power also attacked transportation choke points. The North Korean forces were already strung out over the peninsula, and the destruction caused by American bombers prevented needed supplies from reaching North Korean forces in the south. With control of the air obtained, General MacArthur's invasion of Inchon on 15 September 1950 suddenly reversed the fortunes of the UN forces in Korea. In the south, the Eighth U.S. Army, made up of U.S., ROK, and British forces, counterattacked the next day and United Nations forces in the Pusan Perimeter began to push north