World War, 1939-1945 History 21 Campaigns 20 Holocaust, Jewish (1939-1945) 11 Jews 8 Aerial operations 5 Airplanes, Military 5 more ... Rescue 5 Foreign relations 4 Industries 4 Soldiers 4 Atrocities 3 Civil defense 3 Concentration camps 3 Economic conditions 3 Japanese Americans 3 Military relations 3 Politics and government 3 Postwar reconstruction 3 Sino-Japanese War, 1937-1945 3 World War, 1914-1918 3 Aerial operations, American 2 African American soldiers 2 Air pilots, Military 2 Bombings 2 Britain, Battle of, Great Britain, 1940 2 Cold War 2 Colonies 2 Design and construction 2 Diplomatic history 2 less ...