World War, 1939-1945 History 6,205 Campaigns 3,975 Guerre mondiale, 1939-1945 1,988 Regimental histories 1,180 Foreign relations 989 Holocaust, Jewish (1939-1945) 872 more ... Politics and government 869 Aerial operations, American 840 Jews 797 Diplomatic history 635 Naval operations 561 Underground movements 537 Histoire 525 Prisoners of war 495 Atrocities 490 Naval operations, American 490 Secret service 471 History, Military 440 Soldiers 408 Aerial operations 391 Causes 391 World War, 1914-1918 390 Weltkrieg 369 Prisoners and prisons, Japanese 359 Military campaigns 349 Prisoners and prisons, German 338 Armed Forces 336 Women 313 Submarine 312 less ...