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, Jack spots the enemy aircraft and, bent on avenging his friend, begins an attack. He is successful in downing the aircraft and lands to retrieve a souvenir of his victory. The owner of the land where David's aircraft crashed urges Jack to come to the dying man's side. He agrees and becomes distraught when he realizes what he has done. David consoles him, and before he dies, forgives his comrade.