A superb organizer Himmler expanded the SS to upwards of 52,000 men by 1933. This expansion began the start of its independence from Ernst Rohm's Sturnabteilung (SA) control in which it was originally subordinate to. He then organized the Sicherheitsdinst (SD), a security service under the control of Reinhard Heydrich. Together the two men ensured that the Nazi's consolidated power over Bavaria and in 1933 finalized their independence from Rohm's SA. When Hitler became Chancellor in 1933 Himmler began to quickly move up the ranks. He was appointed Munich Police President in March of 1933 and shortly afterwards became Commander of all political police units throughout the Reich. It was at this time Himmler established the first concentration camp at Dachau. On April 20, 1934, Himmler became head of the Prussian Police and Gestapo, which was formally under the control of Hermann Goering. This brought the turning point in Himmler's career when he masterminded the defense, which on June 30, 1934 smashed the power of the SA and paved the way for the emergence of the SS. By June 17, 1936 Himmler had successfully completed his bid to win control of the political and criminal police throughout the Third Reich, becoming head of the Gestapo in addition to his position as Reichsfuhrer of the SS. According to the book The Architect of Genocide: Himmler and the Final Solution; "this overall control of .
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power by one man of such evil set forth the merciless slaughter of millions (Breitman, 88)". .
The Gestapo began to change face under the leadership of Himmler. It was Himmler's men who staged the phony border incident that Hitler used to justify the invasion of Poland and the outbreak of World War II. Then the makeup of the Gestapo once again changed when Himmler's commitment to the Aryan myth came to the forefront.