One Day of War (1942)

"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.

Unfortunately the movie One Day of War is not yet available on HBO Max.