Why We Fight: Prelude to War (1942)
- HD 1080
- Runtime: 53m.
- Status: Released
- 0
- Languages: en
- Country: United States of America
- Director: Frank Capra, Anatole Litvak
- Stars: Walter Huston, Max Schmeling
- keywords: world war ii
- Production_studio: War Activities Committee of the Motion Pictures Industry, U.S. War Department
- Slogan: The US government puts the finger on the United Nations' enemies
- providers: fuboTV, Epix Amazon Channel, MGM Plus Roku Premium Channel, MGM Plus, GuideDoc, FlixFling
- The Why We Fight: Prelude to War is featured in the top rankings of 1942
- #17 in Top War Movies of 1942
- #2 in Top Documentary Movies of 1942
Prelude to War was the first film of Frank Capra's Why We Fight propaganda film series, commissioned by the Pentagon and George C. Marshall. It was made to convince American troops of the necessity of combating the Axis Powers during World War II. This film examines the differences between democratic and fascist states.