Naval operations World War, 1939-1945 Submarine 318 Naval operations, German 147 History 142 Campaigns 133 Naval operations, American 99 more ... Military operations, Naval 70 Guerre mondiale, 1939-1945 69 Submarines (Ships) 36 Naval operations, Japanese 33 Opérations sous-marines 33 Aerial operations 31 Opérations navales 28 World War, 1914-1918 26 Naval operations, British 25 Sailors 21 Opérations navales américaines 20 American 19 Merchant marine 19 Submarine warfare 19 Naval convoys 17 Warships 17 Siena Donor: Vallely, M.L.S., John R. 16 Shipwrecks 14 History, Naval 12 Military campaigns 12 Aircraft carriers 11 Campagnes et batailles 10 Cryptography 10 less ...