The Tactical Air Force, Tenth Army (TAF) was a joint aviation command of the Tenth United States Army that was responsible for commanding all land-based aviation and aviation command and control units during the Battle of Okinawa. The TAF's headquarters was provided by the 2nd Marine Aircraft Wing and it was the largest joint aviation unit under Marine Corps command during World War II. During the battle, the TAF was commanded by Major General Francis P. Mulcahy until ill-health forced him to be relieved by MajGen Louis E. Woods. According to United States sources, TAF aircraft were responsible for shooting down 637 Japanese aircraft during the battle.