One of the all-time best WWII movies was actually made as propaganda

Went the Day Well? is a British World War II thriller that still holds up today.
Moviefone

Propaganda: A War Film - Where to Watch

Streaming platforms for Propaganda: A War Film haven’t been announced yet. Check back soon for updates on where you can watch it online.
The Atlantic

WWII: Siege of Leningrad

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 ...
insider.si.edu

The Japan/America film wars : World War II propaganda and its cultural contexts / edited by Abé Mark Nornes and Fukushima Yukio

Prepared in conjunction with a retrospective of World War II documentary films presented at the Yamagata International Documentary Film Festival, 1991. "Originally published in Japanese and English in ...