Why We Fight, a series of seven propaganda films commissioned by the U.S. government and directed by Frank Capra during World War II, was an attempt to explain U.S. involvement in the war and justify becoming allies with the Soviet Union.

Capra considered the films a direct response to Leni Riefenstahl's Triumph of the Will. The series was largely constructed from stock footage, reenactments, and recontextualized Axis propaganda films. This excerpt from The Battle of Russia describes the siege of Leningrad. For photographs of the Eastern Front, see Alan Taylor's World War II retrospective.

To watch this film in its entirety, visit Internet Archive.