One Day of War [День войны]
- Release Year
- 1942
- Runtime
- 1h 20m
- Genres
- Documentary
- War
- Directed By
- Mikhail Slutsky

"This film follows one day in the heroic struggle of the Soviet people against the German Fascist invaders." A Day of War (Den voyny), a chronicle of total war filmed on all fronts as well as at the rear, was produced by the Central Studio of Documentary Films; shot by 160 newsreel cameramen on June 13, 1942, the 356th day of the Great Patriotic War; superbly assembled by M. Slutsky; and released on October 22, 1942. Its cameramen were informed of the actual date of shooting only two days before work commenced.
