Waldemar Hoven was a Nazi physician at Buchenwald concentration camp, and convicted war criminal for conducting human experiments regarding typhus which led to the deaths of many concentration camp prisoners, and as one of the organizers of the euthanasia program Aktion T4; this Nazi initiative resulted in the systematic murder of 275,000 to 300,000 disabled people. He was sentenced to death and hanged on 2 June 1948.