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Enclave Squad Sigma
Enclave Squad Sigma.jpg
Biography and appearance
RoleEnclave Special Forces
LocationMobile Base Crawler
Combat Stylemodern
Base IDxx0057beRef IDxx0057b8, xx0057b9, xx0057ba, xx0057bb, xx0057bc
Gametitle-FO3 BS.png
Gametitle-FO3 BS.png

Enclave Squad Sigma is a special operations unit of Enclave soldiers. One such squad is stationed at Adams Air Force Base in 2277.


Following the destruction of the Raven Rock military base, the Enclave has suffered a tremendous blow to their morale and military operations. Entire companies of soldiers were left with little or no contact or on-going tactical orders, and no reinforcements. In response to the crisis, Enclave High Command redeployed Sigma Squads from previously unknown, covert locations outside the Capital Wasteland, to secure assets deemed as crucial to the survival of the Enclave's cause.[1]

Each member of a Sigma squad is a veteran of numerous combat sorties, trained in multiple forms of combat. Organized into six-person squads, Sigmas are the highest trained and most experienced troopers the Enclave has to offer.[1]

Interactions with the player character

Interactions overview

Icon severed finger.png
This character drops a finger when killed (Lawbringer).
Perk empathy synthesizer.png
This character is involved in quests.


  • Who Dares Wins: A Sigma Squad is assigned to protect the mobile base crawler in case of attack. It consists of 5-6 soldiers with different types of specialties, led by the Enclave Sigma Leader. Once the Lone Wanderer is spotted inside the Enclave Mobile Crawler, Enclave Squad Sigma will show up and attempt to neutralize the Lone Wanderer.


Icon armored vault suit.png
Enclave power armor
Enclave power helmet
Tesla armor
Tesla helmet
Enclave Hellfire armor*
Enclave Hellfire helmet*
Assault carbine icon.png
AER9 laser rifle
Plasma rifle
Gatling laser
Heavy incinerator*
Icon briefcase.png
Carried items
Plasma grenade
Pulse grenade
Plasma mine
Pulse mine
Icon male severed head.png
Drops on death

*Sigma leader only


Enclave Squad Sigma appears only in the Fallout 3 add-on Broken Steel.


  1. 1.0 1.1 Fallout 3 Official Game Guide Game of the Year Edition p.44: "Enclave Sigma
    After the destruction of Raven Rock, the Enclave performed a mixture of tactical retreat and all-out flight, and their grip on the Capital Wasteland loosened severely. Now contending with malcontented soldiers, the remains of Enclave Camps dotted throughout the Wasteland with little or no contact or on-going tactical orders, and a lack of new recruits, the Enclave may be a doomed force. However, a small influx of specially trained fighters is seeking to fill the gap left by the Brotherhood of Steel's advances. Posted to previously unknown and highly secretive locations outside of the Capital Wasteland, only the most veteran of Enclave forces trained in multiple forms of combat earn the right to call themselves Sigma. These six-person squads feature a leader clad in Hellfire Armor and carrying an Incinerator, and each man in has seen numerous combat sorties and lived to tell about them. Sigma Squads are posted around locations deemed by Enclave high command as "imperative" to the salvation of the cause, so whenever you encounter Sigma Squads, you know something vital to the Enclave is close by."
    (Fallout 3 Official Game Guide faction profiles)
Enclave Symbol (Fallout 3).png
Enclave Symbol (Fallout 3).png