World War, 1939-1945 History 6,512 Campaigns 4,126 Guerre mondiale, 1939-1945 2,033 Regimental histories 1,227 Foreign relations 1,022 Politics and government 915 more ... Holocaust, Jewish (1939-1945) 911 Jews 850 Aerial operations, American 843 Diplomatic history 665 Underground movements 617 Naval operations 567 Histoire 540 Atrocities 523 Prisoners of war 511 Naval operations, American 498 Secret service 481 History, Military 454 Soldiers 419 Aerial operations 405 Causes 403 World War, 1914-1918 398 Weltkrieg 374 Prisoners and prisons, Japanese 361 Military campaigns 360 Prisoners and prisons, German 358 Armed Forces 344 Women 336 Submarine 318 less ...