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 color 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.