Brotherhood Civil War

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Brotherhood Civil War
Fo3 Schism Image (1)
The doctrinal conflict between Owyn Lyons and Henry Casdin
locationCapital Wasteland
date2276 - Ongoing
Involved parties
BoS flag Capital Wasteland Brotherhood of SteelFallout 3 Outcast Emblem Brotherhood Outcasts
BoS flag Elder Owyn LyonsFallout 3 Outcast Emblem Protector Henry Casdin
Brotherhood Paladins
Brotherhood Knights
Brotherhood Scribes
Brotherhood Initiates
Sentry bots
Outcast Protectors
Outcast Defenders
Outcast sentry bots
Outcast protectrons
Outcast robobrains
Connected events
Brotherhood-Enclave War
Capital Wasteland Super Mutant War
Aqua Pura delivery program
Gametitle-FO3Gametitle-FO3 OAGametitle-FO3 BSGametitle-FNV
Gametitle-FO3Gametitle-FO3 OAGametitle-FO3 BSGametitle-FNV

Tensions continue to mount between the courageous forces of the Brotherhood of Steel and their estranged brethren, the Outcasts.

Three Dog, Fallout 3

The Brotherhood Civil War was a conflict between the Brotherhood of Steel and a splinter group, the Brotherhood Outcasts. The conflict began in 2276, following a drastic shift in mission profile by Owyn Lyons. Soon after, a large group of Brotherhood loyalists, led by Protector Henry Casdin, broke off from the chapter and continued the Brotherhood's mission on their own.


As Owyn Lyons slowly changed the profile of the mission to DC[1] from gathering and processing pre-War technology to endeavours he considered beneficial to the local populace,[2] discontent began to rise among his ranks. The dissatisfaction reached a boiling point in 2276 when Paladin Henry Casdin openly defied the Elder's orders and rallied his followers, secured large amounts of weapons and equipment and left Citadel.

Branded as outcasts and struck from the Codex, the loyalists formed a new chapter, bearing the name "Outcasts" as a badge of merit, along with the black/red paint-job on their power armor units. They secured a new base of operations in Fort Independence near the ruined city of Fairfax and continued their original mission of securing technology.


The Outcasts have many advantages over the Brotherhood of Steel when departing the Citadel, they took a large amount of supplies and military ordnance with them, leaving the chapter in a critical condition. Furthermore, all of the loyalists are all veterans of the Brotherhood, are trained in the use of advanced weaponry, and have years of experience and wasteland travels behind them. On the other hand, the Brotherhood chapter consists of a mix of original Brotherhood members and hastily trained local recruits.

Despite the advantage, Outcasts do not seek to exploit their advantage and refuse to openly attack the Brotherhood. They focus on their mission and their long-range patrols in search of lost technology make the wasteland much more secure, as they exterminate any threats with extreme prejudice but do not engage non-hostile humans unprovoked.

However, if confronted with a Brotherhood patrol, the Outcasts will attack and fight until either side is dead. The frequency of these encounters increase after Project Purity went online in 2278 and the Brotherhood of Steel began assisting with Aqua Pura deliveries across the Capital Wasteland, thus taking them into territory held by the Outcasts.


The outcome of this civil war is unknown, however it was notable enough to gain the attention of the Western Brotherhood chapters, although they themselves took no action. Veronica Santangelo, a scribe in the Mojave chapter, will comment about the conflict four years later.[3]


  1. Scribe Bowditch: "Brotherhood members are sworn to acquire and protect technology of the past. But not everyone interprets these oaths in the same way."
  2. Bowditch: "Elder Lyons sees these duties as part of a larger dedication to protect the innocent. Some, like the Outcasts, disagree with these priorities."
  3. Veronica: "We've had people go rogue, though, and start helping people. One chapter had a small civil war over it. We take our isolationism seriously."
Stroken BoS Emblem

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