Heydrich, named chief of the Gestapo by Himmler on 22 April 1934, also continued as head of the SS Security Service (Sicherheitsdienst; SD).[11] Himmler and Heydrich both immediately began installing their own personnel in select positions, several of whom were directly from the Bavarian Political Police, such as Heinrich Müller, Franz Josef Huber and Josef Meisinger.[12] Many of the Gestapo employees in the newly established offices were young and highly educated in a wide-variety of academic fields and moreover, represented a new generation of National Socialist adherents, who were hard-working, efficient, and prepared to carry the Nazi state forward through the persecution of their political opponents.[13]