Some great war films were made during WWII about Japanese treachery and imperialism.
PURPLE HEART
THE FLYING TIGERS
BATAAN
WING AND A PRAYER
GUADALCANAL DIARY
BLOOD ON THE SUN
I would add They Were Expendable to the list. I like Destination Tokyo but you have to suspend a lot of disbelief to handle Cary Grant as an Oklahoman.
I sincerely believe they should be required viewing in history classes and although I haven’t seen any, they should be included in the curriculum.