Naval operations World War, 1939-1945 68 History 65 World War, 1914-1918 30 Submarine 27 Military operations, Naval 20 Warships 20 more ... Opérations navales 15 Submarines (Ships) 12 Guerre mondiale, 1939-1945 10 Histoire 9 Submarine warfare 9 Navies 8 Siena Donor: Vallely, M.L.S., John R. 8 History, Naval 7 Battleships 6 Aerial operations 5 Naval art and science 5 Naval operations, German 5 Weapons systems 5 Armored vessels 4 Design and construction 4 Guerre mondiale, 1914-1918 4 Naval history, Modern 4 Naval operations, American 4 Naval operations, Japanese 4 Sea life 4 Torpedoes 4 Underwater archaeology 4 Equipment and supplies 3 less ...