In September 1930, as a consequence of the Stennes Revolt in Berlin, Hitler assumed supreme command of the SA as its new "Oberster SA-Führer". He sent a personal request to Röhm, asking him to return to serve as the SA's Chief of Staff. Röhm accepted this offer and began his new assignment on 5 January 1931. He brought radical new ideas to the SA, and appointed several close friends to its senior leadership. Previously, the SA formations were subordinate to the Nazi Party leadership of each "Gau". Röhm established new "Gruppe", which had no regional Nazi Party oversight. Each "Gruppe" extended over several regions and was commanded by a SA-"Gruppenführer" who answered only to Röhm or Hitler.