Why We Fight: The Battle of Britain
- Tahun: 1943
- Negara: United States of America
- Genre: Documentary, War
- Studio: War Activities Committee of the Motion Pictures Industry, U.S. War Department
- Kata kunci: world war ii
- Pengarah: Frank Capra, Anthony Veiller, Anatole Litvak
- Pelakon: Walter Huston, Frieda Inescort, John B. Hughes