These units, which were part of the French police's intelligence service, specialised in tracking down so-called "internal enemies" (e.g. the French Resistance, the Comet Line that aided shot down Allied aircrews), Jews and those evading work conscription. The Special Brigades were based in room 35 of the Paris police headquarters. The Brigade Spéciale N°2 was notorious for using torture as well as leading investigations, manhunts, surveillance and interviews of suspects in Occupied France.