Sicherheitsdienst (English: Security Service), full title Sicherheitsdienst des Reichsführers-SS, or SD, was the intelligence agency of the SS and the Nazi Party in Nazi Germany. The organization was the first Nazi Party intelligence organization to be established and was often considered a "sister organization" with the Gestapo, which the SS had infiltrated heavily after 1934.
In Inglourious BasterdsEdit
Hans Landa is an SD officer during the Stolz der Nation film premiere. The two guards from Hitler's opera box were also members of the SD.