His masterpiece 'Paths of Glory' (1957) provides a devastating critique of WWI military hierarchy and the senseless brutality of trench warfare.
Peter Weir Australia'Gallipoli' (1981) intimately explores the Australian experience in WWI through the perspectives of two young soldiers facing the tragic campaign.
Sergei Eisenstein Soviet Union'October: Ten Days That Shook the World' (1928) uses WWI's backdrop to depict the Russian Revolution and its revolutionary transformation of society.