Original: While under interrogation Rudolf Hoess , commandant of Auschwitz concentration camp from 1940 to 1943 , Wikipedia : Rudolf Hoess said that Adolf Eichmann told him that two and a half million Jews had been killed in gas chambers and about half a million died '' naturally '' .
Simplified: Nazi Rudolf Hoess said that between 2.5 and 3 million had been killed , while Adolf Eichmann gave a figure of 2 million .