Prisoner of War (1954)

An American army officer, troubled by reports of brutality, volunteers to investigate conditions inside North Korean POW camps. He parachutes behind enemy lines and infiltrates a group of G.I.s being marched to one of these camps. There, he witnesses scenes of G.I.s being brainwashed, beaten, subjected to mock executions, deprived of food and water, and more, under the supervision of a Russian colonel.