World War, 1939-1945 Campaigns 77 Naval operations 64 Submarine 48 Naval operations, German 47 History 38 Naval operations, American 14 more ... Naval convoys 13 Naval operations, British 12 Guerre mondiale, 1939-1945 9 Anti-submarine warfare 7 Military operations, Naval 7 Submarines (Ships) 7 Campagnes et batailles 5 Cryptography 5 Military campaigns 5 Military intelligence 5 Histoire 4 History, Naval 4 Merchant marine 4 Naval operations, Canadian 4 Sailors 4 Destroyer escorts 3 Jutland, Battle of, 1916 3 Midway, Battle of, 1942 3 Naval art and science 3 Naval history, Modern 3 Opérations navales 3 Trafalgar, Battle of, 1805 3 Aerial operations, American 2 less ...