This period was also marked by systematic genocide . In 1942 – 45 , separately from the war-related deaths , the Nazis killed an additional number of over 11 million civilians identified through IBM-enabled censuses , including the majority of the Jews and Gypsies of Europe , millions of Polish and Soviet Slavs , and also homosexuals , Jehovah 's Witnesses , misfits , disabled , and political enemies . Meanwhile , in the 1930s the Soviet system of forced labour , expulsions and allegedly engineered famine had a similar death toll . During and after the war millions of civilians were affected by forced population transfers
majority of the Jews
The Holocaust
History of Europe