World War, 1939-1945 History 323 Campaigns 137 Foreign relations 81 Holocaust, Jewish (1939-1945) 79 Politics and government 78 Diplomatic history 63 Jews 52 Causes 43 Atrocities 40 Propaganda 38 Social aspects 35 Secret service 29 Underground movements 28 Social conditions 24 Influence 22 Economic aspects 21 Women 20 World War, 1914-1918 20 National socialism 19 Rescue 18 Concentration camps 17 Prisoners and prisons, German 16 Social life and customs 15 Aerial operations 14 Children 14 Aerial operations, British 13 Armed Forces 13 Ethnic relations 13 History, Military 12