Many of the action sequences used footage from earlier films: most sequences of the Japanese air raids on Midway are stock shots from 20th Century Fox's "Tora! Tora! Tora!" (1970). Some scenes are from the Japanese "Toho" film "Hawai Middouei daikaikusen: Taiheiyo no arashi" (1960) (which also stars Mifune). Several action scenes, including the one where a Mitsubishi A6M Zero slams into 's bridge, were taken from "Away All Boats" (1956); scenes of Doolittle's Tokyo raid at the beginning of the film are from "Thirty Seconds Over Tokyo" (1944). In addition, most dogfight sequences come from wartime gun camera footage or from the film "Battle of Britain" (1969).