Chicago

The once great city of Chicago, Illinois was nearly completely destroyed in the Great War. The few that survived the bombs now live mostly in small tribal villages in the area of the former city. Examples of such villages are Dirt Haven and Brahmin Wood and raider camps, like Devil's Graveyard.

Some time after the defeat of the Master in 2162, the Brotherhood of Steel constructed airships and dispatched some of its soldiers East, to track down and assess the extent of the remaining super mutant threat. However, a great storm broke the main airship and flung it far from its course. The mighty airship was badly damaged. The smaller sections were torn from the main craft and were never to be seen again. Many of the expedition leaders, including Paladin Latham, were lost to the winds. The fraction of the crew that still survived, struggled to keep their ship aloft before finally crashing on the outskirts of the ruins of Chicago. The survivors eventually formed an organization called the Midwestern Brotherhood, which diverged greatly from the ideals of the old Brotherhood. In time, they established a harsh rule over the towns and villages in that area, controlled from the Brotherhood Bunker Alpha.

Appearances in games
The remains of Chicago appear only in Fallout Tactics. The city is briefly mentioned in Fallout 3 by Scribe Jameson who says the Brotherhood Of Steel fought against Super Mutants there.