Thunderbolt! is a 1947 film directed by William Wyler and John Sturges which documented the American aerial operations of Operation Strangle in World War II, when flyers of the Twelfth Air Force based on Corsica successfully impeded Axis supply lines to the Gustav Line and Anzio beachhead. The film was originally shot in 16mm by members of the Army Air Forces. The 12th Combat Camera Unit recorded the combat footage using cameras mounted on some of the P-47s and a B-25 medium bomber equipped as a camera ship to accompany the fighters.
Directors Wyler and Sturges, serving as officers in the AAF, were attached to the 12th CCU during the period it filmed the activities of the 57th Fighter Group. and Wyler used his association as a "passport" to visit many areas of liberated Europe after completion of the initial shooting.
Although shown to the press late in 1945, the film was not generally released until 1947 by Monogram Pictures, and was re-released in 1950 during the Korean War. Half of the 1947 profits from the film's release went to the Army Air Force Relief Society and the United States Treasury.