Born March 16th, 1911 in Bavaria, Mengele grew up to become one of the head doctors of Auschwitz, after first running the Gypsy camp where he had all of the inmates gassed in August 1944. At Birkenau, he became the Chief Medical Officer at the infirmary where Sara worked. Mengele was in Auschwitz for twenty-one months and came to be called the "Angel of Death" for his incredibly gruesome and murderous treatment of inmates. He was responsible for inspecting prisoners and sending tens of thousands of them to the gas chambers where they would be killed and cremated en masse.