World War, 1939-1945 History 3,538 Campaigns 1,456 Holocaust, Jewish (1939-1945) 707 Jews 608 Foreign relations 541 Politics and government 519 more ... Atrocities 345 Social aspects 338 Diplomatic history 333 Underground movements 326 Social conditions 280 Aerial operations, American 274 Regimental histories 238 Prisoners of war 235 Soldiers 232 History, Military 225 Influence 213 Ethnic relations 210 Rescue 206 Secret service 204 Concentration camps 203 Women 199 Causes 197 History and criticism 196 Prisoners and prisons, German 172 Aerial operations, British 171 World War, 1914-1918 166 Refugees 164 Naval operations 163 less ...