One of the pieces I'm looking at is a 1941 film (part one was released about a week before the attack on Pearl Harbor) called The 47 Ronin. ( https://en.wikipedia.org/wiki/The_47_Ronin_(1941_film) )
It was directed by Mizoguchi Kenji at the direction of the government, who wanted something patriotic to raise morale, and instead got something weirder and more challenging, and it's ultimately a a flawed but compelling film.
But it's also a product commissioned by the government of Japan during WWII.
The 47 Ronin (1941 film) - Wikipediaen.wikipedia.org