History World War, 1939-1945 125 Politics and government 89 Military art and science 58 Biography 55 Foreign relations 51 United States 45 Campaigns 41 Military history, Modern 38 Armed Forces 36 World War, 1914-1918 30 World politics 30 Great Britain 28 Military policy 27 History, Military 24 Terrorism 21 Arms race 19 Equipment and supplies 17 Military intelligence 17 Strategy 17 Naval operations 16 Congresses 15 Warships 15 Communism 14 Intelligence service 14 Soldiers 14 20th century 13 Political aspects 13 Secret service 13 Sources 13