They were an elite unit that the Earth Federation established in U.C. 0083 after the conclusion of Operation Stardust. Their original intention was to defend the Earth Federation against supporters of the Principality of Zeon, as well as to investigate Zeon sympathizers. However, they eventually turned rogue, allying themselves with Axis Zeon in order to fight against the Anti-Earth Union Group in an attempt to gain control over the Earth Sphere. They were all but wiped out by the AEUG at the end of the Gryps Conflict.