Reichsführer-SS was a special title and rank that existed between the years of 1925 and 1945 for the commander of the Schutzstaffel (SS). Reichsführer-SS was a title from 1925 to 1933, and from 1934 to 1945 it was the highest rank of the SS. The longest-serving and most noteworthy office holder was Heinrich Himmler.

The Concentration Camps Inspectorate (CCI) or in German, IKL was the central SS administrative and managerial authority for the concentration camps of the Third Reich. Created by Theodor Eicke, it was originally known as the "General Inspection of the Enhanced SS-Totenkopfstandarten", after Eicke's position in the SS. It was later integrated into the SS Main Economic and Administrative Office as "Amt D".