Naval operations World War, 1939-1945 80 Submarine 43 History 42 Campaigns 16 Biography 11 World War, 1914-1918 11 Warships 9 World War 9 Naval operations, German 8 World war, 1939-1945 8 Naval operations, American 6 Aerial operations 5 Civil War, 1861-1865 5 Naval operations, British 5 Pacific Ocean 5 Admirals 4 Submarine warfare 4 Battleships 3 Naval convoys 3 Navy 3 United States 3 United States. Navy 3 20th century 2 Aircraft carriers 2 Chronology 2 Falkland Islands War 2 Fiction 2 Great Britain 2 Naval aviation 2