wartime patriotism

His revolutionary montage technique in films like *Alexander Nevsky* and *October* powerfully depicted collective patriotic struggle and national identity during wartime.

He directed both fictional narratives and documentaries (*Why We Fight* series) that explored American patriotism, sacrifice, and moral duty during World War II.

His humanistic approach in films like *There Was a Father* examined the personal costs of wartime patriotism and national obligation on ordinary Japanese families.