Brotherhood of Steel (Chicago detachment)

The Chicago detachment, also known as the Eastern Brotherhood, is a rogue chapter of the Brotherhood of Steel that had fallen off of the radar of the organization's other chapters by 2254.

Background
The Chicago detachment's origins lie in the airships dispatched by the West Coast Brotherhood of Steel to track down the remaining Super mutants. While the majority of these airships were destroyed or scuttled, one crash-landed in the Midwest. The survivors organized themselves into a new chapter near Chicago, but by 2254 they had gone rogue, cutting all contact with the larger Brotherhood. This detachment at some point combatted a group of Super Mutants originating from the west, resulting in either the destruction of assimilation of the group. The expedition that would become the Brotherhood's Eastern Division attempted to restore contact during their journey to the Capital Wasteland, but did not succeed.

Appearances
The Chicago detachment of the Brotherhood of Steel is mentioned in Fallout 3 and Fallout 4.

Behind the scenes
This faction is based on the Midwestern Brotherhood of Steel from the spin-off game Fallout Tactics, which was declared no longer canon by Bethesda.