The SS and police leaders directly commanded a headquarters staff with representatives from almost every branch of the SS and the uniformed police. This typically included the Ordnungspolizei (Orpo; regular police), Gestapo (secret police), Totenkopfverbände (SS-TV; Nazi concentration camps), SD (intelligence service), and certain units of the Waffen-SS (combat units). Most of these SS and Police Leaders normally held the rank of SS-Gruppenführer or above and answered directly to Himmler in all matters pertaining to the SS within their area of responsibility.