Early in his career as a research gynecologist, Carl Clauberg studied treatments to help infertile women conceive. In 1943 and 1944, on the authorization of SS chief Heinrich Himmler, Clauberg conducted experiments at Auschwitz intended to develop a method of mass sterilization. Using some 700, mostly Jewish women as subjects, he injected toxins into the uterus causing severe pain and sometimes death. He also conducted experiments on women in Ravensbrück concentration camp.
Clauberg was arrested by Soviet authorities and was tried and sentenced to 25 years’ imprisonment for his crimes related to sterilization experiments in the camps. He was released in 1955 as part of a German-Soviet repatriation agreement. Re-arrested by German police, Clauberg died before his trial began in 1957.