Nikolaus "Klaus" Barbie (25 October 1913 – 23 September 1991) was an SS-Hauptsturmführer (rank equivalent to army captain) and Gestapo member. He was known as the "Butcher of Lyon" for having personally tortured French prisoners of the Gestapo while stationed in Lyon, France. After the war, United States intelligence services employed him for their anti-Marxist efforts and also helped him escape to South America.