World War, 1939-1945 History 5,610 Guerre mondiale, 1939-1945 2,612 Campaigns 2,405 Holocaust, Jewish (1939-1945) 1,205 Jews 1,149 Aerial operations, American 1,073 more ... Histoire 930 Politics and government 801 Foreign relations 776 Underground movements 733 Weltkrieg 629 Atrocities 560 Military campaigns 536 Diplomatic history 488 Regimental histories 457 Prisoners of war 390 Rescue 385 Economic aspects 378 War 373 Secret service 350 Women 350 Prisoners and prisons, German 347 Concentration camps 339 Armed Forces 334 Naval operations 321 World War, 1914-1918 321 Soldiers 315 Aerial operations 313 History, Military 299 less ...