I believe in the ending that will consist a lot of death, Hitler will escape however everyone including the USA undercovers will get burned alive, however I think when the commander and the general/commander of the Nazi interrogator will get ambushed and killed. One of the conventions of war films is that the war ends, or the conflict is over, and the soldiers return home. So because the American spys are understood as the protagonists, of the movie they all or some will go back home to restore the feeling of accomplishment and satisfaction of their job. The two people who owned the theater could possibly escape to somewhere else, outside of France to live happily ever after.
