History World War, 1939-1945 154 Holocaust, Jewish (1939-1945) 33 Campaigns 32 Military campaigns 32 Jews 21 Ethnic relations 17 more ... Armed Forces 13 Regimental histories 12 War 11 Collective memory 9 Military operations, Aerial 9 Prisoners of war 9 Underground movements 9 American 8 Atrocities 8 Concentration camps 8 Internment camps 8 Refugees 8 Soldiers 8 Aerial operations, American 7 Political aspects 7 Race relations 6 Secret service 6 Histoire 5 Historiography 5 Influence 5 Persecutions 5 Antisemitism 4 Influence (Literary, artistic, etc.) 4 less ...