Title: Aircraft versus submarine in two World Wars
Subjects: World War, 1914-1918, Anti-submarine warfare, Aerial operations, World War, 1939-1945, Submarine, Naval operations, History, World war, 1939-1945, naval operations, submarine, World war, 1914-1918, naval operations, World war, 1914-1918, aerial operations, World war, 1939-1945, aerial operations, Military Aeronautics
Time periods: 20th century