Viktor Hermann Brack was a member of the Schutzstaffel (SS), a convicted war criminal and one of the prominent organisers of the involuntary euthanasia programme Aktion T4; this Nazi initiative resulted in the systematic murder of 275,000 to 300,000 disabled people. He held various positions of responsibility in Hitler's Chancellery in Berlin. Following his role in the T4 programme, Brack was one of the men identified as responsible for the gassing of Jews in extermination camps, having conferred with Odilo Globočnik about its use in the practical implementation of the Final Solution. Brack was sentenced to death in 1947 during the Doctors' Trial and executed by hanging in 1948.