During World War II, Nazi Germany engaged in a policy of deliberate maltreatment of Soviet prisoners of war (POWs), in contrast to their general treatment of British and American POWs. This policy, which amounted to deliberately starving and working to death Soviet POWs, the bulk of whom were Slavs, was grounded in Nazi racial theory, which depicted Slavs as sub-humans (Untermenschen). The policy resulted in some 3.3 to 3.5 million deaths.