World War, 1939-1945 History 193 Foreign relations 79 Diplomatic history 60 International relations 55 Social aspects 41 Politics and government 40 more ... Secret service 39 History and criticism 35 Economic aspects 31 Women 25 Literature and the war 24 World War, 1914-1918 24 Campaigns 23 War 16 Aerial operations, British 15 Influence 15 Armed Forces 14 Motion pictures and the war 14 Children 13 Diplomatic relations 13 Social conditions 13 Causes 12 Colonies 12 English literature 12 Underground movements 12 War and literature 12 British 11 Evacuation of civilians 11 Motion pictures 11 less ...