"Because the SS was the chosen instrument of the murder campaign, Himmler moved closer to the center of power. The SS, now separated institutionally from the SA, became the most powerful institution within the National Socialist party. After the Night of the Long Knives, its task would be to subordinate the many German police institutions to Nazi ideology. Himmler would seek to merge his SS with Germany’s established police forces by way of rotation of personnel and institutional centralization under his personal command. In 1936 Hitler named Himmler the Chief of German Police. This placed him in charge of the uniformed men of the Order Police, the detectives of the Criminal Police, and the operatives of the Secret State Police (Gestapo). The police was a state institution (or rather comprised a number of different state institutions) and the SS was a Nazi party institution; Himmler sought to bring the two together. In 1937, Himmler established the office of Higher SS and Police Leaders, regional chiefs who in theory commanded both SS and police forces, and unified the hierarchy of command."