The Cross of Lorraine

At the start of World War II, Frenchmen from all walks of life enlist. Defeated by the invading Germans in 1940, Marshal Philippe Pétain signs a peace agreement and the troops surrender. However, instead of being repatriated to their homes, a group of soldiers find themselves in a brutal prison camp. Most of the men resist as best they can, and some, like Paul (Jean-Pierre Aumont), are willing to spend time in solitary confinement and be subjected to beatings, while others, such as Duval (Hume Cronyn), collaborate with their jailers to get an easier life. The men find solace from Father Sebastian (Sir Cedric Hardwicke), a priest who was also in the army and who counsels them wisely. Eventually Paul helps his fellow prisoners to escape. When they liberate a village, they realise that continued fighting is the only option, so they join the French Resistance.