The climax of the story comes with the epic Battle of Saint-Mihiel. David is shot down and presumed dead. However, he survives the crash landing, steals a German biplane, and heads for the Allied lines. By a tragic stroke of bad luck, he is spotted and shot down by Jack, who is bent on avenging his friend. When Jack lands to pick up a souvenir, he becomes distraught when he learns what he has done, but before David dies, he forgives his comrade.