The 39th Flying Training Squadron is part of the 340th Flying Training Group and is the reserve associate to the 12th Flying Training Wing based at Randolph Air Force Base, Texas. The squadron was first activated as the 39th Pursuit Squadron in the buildup of the United States Army Air Corps in response to the War in Europe. It moved to the Pacific Coast in response to the attack on Pearl Harbor and briefly flew antisubmarine patrols before deploying to the Southwest Pacific Theater, earning two Distinguished Unit Citations (DUC)s and a Philippine Presidential Unit Citation for its actions during the war.