James H. Critchfield

Critchfield joined the Central Intelligence Agency (CIA) in 1948. He was tasked with exploiting the fallen Third Reich's intelligence organizations - Reinhard Gehlen and his Gehlen Organization - to gather information about the Soviet Union. This work, which led to the creation of the post-war West German intelligence apparatus, came to include the use of Nazi war criminals.^[2]

Critchfield defended his actions when the Nazi War Crimes Disclosure Act made it public knowledge, disputing that Gehlen himself was a war criminal but admitting to a Washington Post reporter that "there's no doubt that the CIA got carried away with recruiting some pretty bad people".^{[2]  https://en.wikipedia.org/wiki/James_H._Critchfield}