World War, 1939-1945 History 3,533 Campaigns 1,455 Holocaust, Jewish (1939-1945) 701 Jews 605 Foreign relations 541 Politics and government 519 more ... Atrocities 343 Social aspects 338 Diplomatic history 333 Underground movements 325 Social conditions 279 Aerial operations, American 274 Regimental histories 238 Prisoners of war 235 Soldiers 231 History, Military 225 Ethnic relations 210 Influence 210 Rescue 204 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 165 Naval operations 163 Refugees 162 less ...