If you like old battle movies with a propaganda twist then check out this small section from the Ice Battle in Eisenstein's Alexander Nevsky. A film that makes a comparison between the Teutonic knights and Nazi aggression it was the inspiration behind many battle sequences made since including the Hoth battle in Star Wars and it was rotoscoped for the battle of Helm's deep for the animated Lord of the Rings. Wiki on the movie here Watch the whole movie on google