Rangers

In all Fallout games thus far, Rangers are generally independent paramilitary organizations that enforce a strict set of subjective morals. They can range from a sort of marshal service, to outright mercenaries.

Notable examples of Rangers include:
 * Desert Rangers (Fallout, Fallout: New Vegas)
 * New California Republic Rangers (Fallout 2, Fallout: New Vegas)
 * Reilly's Rangers (Fallout 3)