History 570 World War, 1939-1945 524 Campaigns 263 Armed Forces 79 History, Military 50 Aerial operations, American 43 Soldiers 35 more ... Aerial operations, German 33 Naval operations, American 32 Aerial operations, British 27 Guerre mondiale, 1939-1945 23 Naval operations 23 Regimental histories 21 Naval operations, German 20 Siena Donor: Vallely, M.L.S., John R. 19 Submarine 18 Military campaigns 16 Naval operations, British 16 Naval operations, Japanese 14 Atrocities 13 Campagnes et batailles 12 Histoire 11 Officers 11 Strategy 11 Ardennes, Battle of the, 1944-1945 10 Bombing, Aerial 9 Generals 9 Military intelligence 9 Social conditions 9 Weltkrieg 9 less ...