In 1934, when Eichmann applied successfully for a job, the S.D. was a relatively new apparatus in the S.S., founded two years earlier by Heinrich Himmler to serve as the Intelligence service of the Party and now headed by Reinhardt Heydrich, a former Navy Intelligence officer, who was to become, as Gerald Reitlinger put it, “the real engineer of the Final Solution” (The Final Solution, 1961).