Title: The death of the U-boats
Subjects: World War, 1939-1945, Germany. Kriegsmarine, Submarine, Germany, Naval operations, History, German Naval operations, Submarine warfare, World war, 1939-1945, naval operations, german, World war, 1939-1945, naval operations, submarine
People: Karl Dönitz (1891-)
Time periods: World War, 1939-1945