Filmed before the WWI armistice, director (and soldier) Gance was able to use actual footage of trench warfare in his anti-war, love-triangle melodrama that features some stunning scenes. Francois Laurin (Severi-Mars) is married to the younger Edith (Dauvray), a marriage forced on her by her father (Desjardins). She loves, and is loved by, poet Jean Diaz (Joube), who is a pacifist until Marie is captured by German soldiers. Diaz enlists and winds up in the trenches where he and Laurin become friends. Much heartbreak follows as Diaz goes mad and has visions of dead soldiers rising out of their graves.