Naval operations History 27 World War, 1939-1945 15 World War, 1914-1918 12 Submarine 8 Fiction 5 History, Naval 5 Personal narratives 4 Campaigns 3 Merchant marine 2 Naval operations, British 2 Privateering 2 Submarines (Ships) 2 Aerial operations 1 Archives 1 Biography 1 Blockade 1 Campaigns and battles 1 Convoy 1 Crimean War, 1853-1856 1 Diplomatic history 1 Dominica, Battle of, 1782 1 Escapes 1 Lists of vessels 1 Midget submarines 1 Naval operations, German 1 Naval operations, Japanese 1 Naval strategy 1 Personal narratives, British 1 Prisoners and prisons 1