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List of Brotherhood of Steel chapters

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What follows is a list of all known Brotherhood of Steel chapters. A note on terminology: A rogue Brotherhood of Steel chapter is a division of the Brotherhood that either does not recognize the authority of Lost Hills or has significantly deviated, up to and including total abandonment of, Brotherhood ideology and the Codex. While these chapters may continue to use the name, rank system and technology of the Brotherhood, they are not seen as legitimate by the Brotherhood proper.


Name Description Locations Status or dates active
The original Brotherhood formed by Roger Maxson in 2077. Lost Hills
Observation bunkers at the Den, Shady Sands, and San Francisco
2077 - ? (still active)
A full chapter formed in the Mojave wasteland by Elder Elijah, nearly destroyed in Operation Sunburst. Hidden Valley
Bunker 13
Lake Mead safehouse
~2270[1] - ? (under lockdown)
A loyalist chapter formed under Protector Henry Casdin in the wake of the Schism in Lyons' Brotherhood of Steel. Fort Independence
VSS Facility
2276 - 2283
A rogue chapter, reformed under Elder Owyn Lyons following his open violation of mission parameters and defiance of Brotherhood Elders at Lost Hills. Citadel
Galaxy News Radio Plaza
Washington Monument
2253 - 2283
Reformed from Lyon's group and Outcasts by Arthur Maxson into loyalist division, operating in Capital Wasteland and Commonwealth. Citadel
Cambridge police station
Boston Airport
2283 - ? (still active)
Eastern Brotherhood of Steel A rogue chapter of the Brotherhood Chicago Unknown
Montana chapter Montana bunker Unknown Unknown

Non-canon chapters

The following chapters feature in Fallout Tactics and Fallout: Brotherhood of Steel. For Bethesda's purposes, neither of the games happened.[2]

Name Description Location Status
Eastern Brotherhood of Steel A rogue chapter of the Brotherhood, reformed under General Simon Barnaky into a new faction subjugating the wasteland and its population. Midwest Reduced prominence (2277)
Texas Expedition A military expedition under Rhombus, aimed against Attis and his resurgent super mutant army Texas Deactivated following conclusion of campaign


  1. The date is estimated based on Veronica Santangelo's age and her statement about Elijah being sent out East during her lifetime.
  2. Todd Howard: "For our purposes, neither Fallout Tactics nor Fallout: Brotherhood of Steel happened."