駐日盟軍總司令
In early August 1945, with Japan's surrender seeming probable, the U.S. Joint Chiefs of Staff recommended to President Truman that Pacific Theatre Commander General Douglas MacArthur be named Supreme Commander for the Allied Powers (SCAP) to oversee the surrender and occupation of Japan. Truman agreed, and MacArthur asked his staff in Manila to begin making concrete preparations for the occupation of Japan.