World War, 1939-1945 2,250 History 1,074 Campaigns 378 Holocaust, Jewish (1939-1945) 147 Social aspects 143 Politics and government 132 Foreign relations 116 tuilleadh ... Jews 116 Social conditions 107 Atrocities 89 Regimental histories 83 Influence 82 Aerial operations, American 80 Prisoners of war 75 Soldiers 75 History and criticism 74 History, Military 69 Underground movements 65 Literature and the war 64 Refugees 62 Diplomatic history 60 Women 58 World War, 1914-1918 58 Secret service 53 Ethnic relations 51 Political aspects 50 Officers 49 Armed Forces 48 Concentration camps 48 Naval operations 45 lúide ...