1942 July 10, DR. JOSEF MENGELE (Auschwitz, Poland)
Began medical experiments in Auschwitz. His experiments on twins were among the most horrific. Many were as young as 5 years old and they were usually murdered after the experiments. Of the approximately 3,000 twins experimented on, very few survived. Mengele succeeded in evading capture and was rumored to have died in 1979 in South America.