Proving Grounds beginning with the Operation Crossroads test on Bikini Atoll in the Marshall Islands in 1946. With the impending establishment of the United States Air Force as an independent service later that year, PACUSA was redesignated Far East Air Forces (FEAF) on 1 January 1947. On that same date, Seventh Air Force in Hawaii was inactivated with its organization absorbed by HQ, FEAF. USAF established Coinciding with the establishment of the United States Air Force (USAF) as an independent service in September 1947, PACUSA/FEAF deployments to Korea prior to the 1948 partition of the country helped in the establishment of the Republic of Korea (e.g., South Korea), along with the transfer of surplus military equipment and other aid to French Indochina as well as aid to the Nationalist Chinese during the Chinese Civil War which resumed after the end of World War II (1945–1949). Korean War On 25 June 1950, the armed forces of the Democratic People's Republic of Korea (e.g., North Korea) invaded South Korea. On 27 June, the United Nations Security Council voted to assist the South Koreans in resisting the invasion. President Harry Truman authorized General of the Army Douglas MacArthur (commander of the US occupying forces in Japan) to commit units to the battle. MacArthur ordered General George E. Stratemeyer, CIC of FEAF, to attack attacking North Korean forces between the front lines and the 38th parallel. Order of Battle, June 1950 Despite the post-World War II demobilization of United States armed forces, the United States Air Force still had substantial forces in the Pacific to oppose the North Korean military. When the North Koreans crossed the 38th parallel on 25 June 1950, FEAF consisted of the following primary units*: Fifth Air Force (Japan) Itazuke Air Base, Kyushu 8th Fighter-Bomber Wing/Group (F-80, F-82) Johnson Air Base, Honshu 3d Bombardment Wing/Group (B-26) Nagoya Air Base, Honshu 347th Fighter All Weather Wing/Group (inactivated 24 June 1950) Tachikawa Air Base, Honshu 374th Troop Carrier Wing/Group (C-54) Yokota Air Base, Honshu 35th Fighter-Interceptor Wing/Group (F-80, RF-80, F-82) Misawa Air Base, Honshu 49th Fighter-Bomber Wing/Group (F-80) Twentieth Air Force (Okinawa and the Marianas) Naha Air Base, Okinawa 51st Fighter-Interceptor Wing/Group (F-80, F-82) Kadena Air Base, Okinawa 31st Photo Reconnaissance Squadron, VLR** (RB-29) Andersen Air Force Base, Guam 19th Bombardment Wing/Group (B-29) Thirteenth Air Force (Philippines) Clark Air Force Base, Luzon 18th Fighter-Bomber Wing/Group (F-80) 21st Troop Carrier Squadron (C-54) 6204th