History World War, 1939-1945 Campaigns 67 Biography 14 Naval operations 14 Equipment and supplies 12 Germany 12 Military intelligence 12 Secret service 11 Great Britain 9 Japanese occupation 9 World War, 1914-1918 9 Armed Forces 8 Soldiers 8 Underground movements 8 Aerial operations, British 7 Diplomatic history 7 United States 7 Foreign relations 6 Military weapons 6 Naval operations, British 6 Strategy 6 Causes 5 Commando operations 5 Japan 5 Personal narratives, American 5 Prisoners of war 5 Social aspects 5 Aerial operations 4 History, Military 4