The FSK was officially renamed the "Reichssicherheitsdienst" (Reich Security Service; RSD) on 1 August 1935. Himmler finally gained full control over the RSD in October 1935. Although Himmler was officially named chief, Rattenhuber remained in command and took his orders for the most part from Hitler or a chief aide such as Julius Schaub. Himmler was given administrative control over the RSD and the SS gained influence over its members. As for the "SS-Begleitkommando", it was expanded and became known as the "Führerbegleitkommando" (Führer Escort Command; FBK). The FBK continued under separate command until April 1945 and remained responsible for Hitler's close personal protection.