While in law school, Schellenberg performed some spy work for the SD.[4] He reported actually having been recruited by two SD agents who were college faculty, who also advised him to join the Civil Service.[5] After graduating he joined the SS in 1933.[6] From what Schellenberg later wrote, the "better type of people" preferred the SS over the other Nazi organizations.[7] While educated as a lawyer, Schellenberg distrusted administrative attorneys and was intent on ensuring the SD could operate outside the constraints of normal law.[8] Subscribing to the Führerprinzip, Schellenberg also thought Hitler's directives were beyond the framework of the legal system and believed it was best to "unquestioningly" carry-out anything ordered by the Nazi leader.[9]