Scourge

The Scourge was an operation conducted by the Brotherhood of Steel before their arrival in Washington, D.C.

Background
On their way to the Capital Wasteland, the Brotherhood's forces came across the ruins of Pittsburgh, Pennsylvania. A truly chaotic city, it was full of gangs, raiders, slavers, and many other kinds of horrors all freely terrorizing the few innocent survivors. In a single night, the Brotherhood swept through the city from their staging area at Mount Wash, and eliminated any resident who put up a fight.

Lyons' contingent left the city with approximately 20 children in tow, who would later be initiated into the Brotherhood. Most were recruited into the Brotherhood. By 2277, only one remains stationed at the Citadel: Greg Bear, nicknamed Kodiak, stationed with Lyons' Pride.

During the Scourge, Lyons' forces suffered only one casualty, Initiate Ishmael Ashur, who was buried in rubble during the fight and presumed dead. He survived and subsequently established the Pitt.

Residents such as Wernher recount how the area used to be much worse before the Brotherhood cleaned up the city, slaughtering half of the violent residents. He explains that due to the actions of the Brotherhood, the threats were sufficiently pacified or eliminated, allowing Ashur to exert control over the city to begin with.

Appearances
The Scourge is mentioned in the Fallout 3 add-on The Pitt.