The head of the BND, Reinhard Gehlen — himself a former intelligence officer in the Wehrmacht — decided that a criminal war record could make his agents a security risk, giving Moscow blackmail material. The old Nazis had served their purpose, providing agent networks and inside knowledge of the Soviet Union and Eastern Europe. Now they had to be screened.
Gehlen, one of the legendary Cold War spymasters, assigned a 32-year-old mole-hunter, Hans-Henning Crome, to the task. In 1963 Mr Crome, now a pensioner living close to his former offices in Pullach, on the fringes of Munich, set up a team called Unit 85, which established itself in the attic of Gehlen’s villa on the BND compound. Co-operating with Nazi-hunters in Ludwigsburg they started to work through the records of the agency’s 2,450 employees.
Gehlen recorded his contacts and reports from the war and stored the microfilms in water-tight barrels in various sites in the Austrian Alps ; he later traded them for his freedom. One of his nuggets of information was that several members of the American Office of Strategic Services — the precursor to the CIA — had been secret members of the US Communist Party.
But the BND was a spy service without a real tradition and even after the sacking of the Nazis and Gehlen’s retirement in 1968, it was plagued by moles.