Flagstaff

Flagstaff is the capital of Caesar's Legion, located in the former state of Arizona.

Background
Before the Great War, Flagstaff was the first city in a series of carjackings committed by "Shanghai Sally" who was an alleged Chinese spy on the run from law enforcement. In 2255, the ruins of the city were taken over by Caesar's Legion, who christened it as their new capital.

Appearances
Flagstaff is mentioned in the Fallout: New Vegas Official Game Guide and Fallout 76, introduced in the Wastelanders update.

Behind the scenes
Flagstaff is a real world city in Arizona, and the county seat of Coconino County.