The Reich Main Security Office[lower-alpha 1] (German: Reichssicherheitshauptamt or RSHA) was an organization subordinate to Heinrich Himmler in his dual capacity as Chef der Deutschen Polizei (Chief of German Police) and Reichsführer-SS, the head of the Nazi Party's Schutzstaffel (SS). The organization's stated duty was to fight all "enemies of the Reich" inside and outside the borders of Nazi Germany.