Praetorian Guard
These ranged from "egregii" or "sexagenarii" (salary of 60,000 "sesterces" = 15,000 "denarii") to the "eminentissimi" (most exalted), limited to the two commanders of the Praetorian Guard and, with the establishment of Diocletian's tetrarchy, the four "praefecti praetorio" (not to be confused with the commanders of the Praetorian Guard in Rome) that assisted the tetrarchs, each ruling over a quarter of the empire.