This 1946 British feature film from Ealing Studios, directed by Basil Dearden and starring Michael Redgrave and Derek Bond (himself a former POW), was filmed on location at a former German prison camp for naval officers (Marlag at Westertimke) from a script cowritten by Guy Morgan, also a former prisoner.
The 1946 British war drama is about a Czechoslovak Army officer who is captured in the Fall of France and spends five years as a prisoner of war, during which time he forms a long-distance relationship with the widow of a British Army officer.