The Circle of Steel is a sub-faction within the Brotherhood of Steel meant for dealing with internal conflicts.
Following the disaster that was Operation: Sunburst, Brotherhood of Steel leaders and Circle operatives marked Elijah for execution. Christine Royce was sent after the rogue elder, equipped with a silenced sniper rifle and CoS recon armor.
Behind the scenes
According to Chris Avellone, the group was formed by hardliners in the Brotherhood of Steel, who believed the rest of the organization has drifted from the original principles of preserving tech. The Circle of Steel, in terms of their position relative to the Brotherhood proper, are the Internal Affairs of the whole Brotherhood of Steel.[Non-canon 1][Non-canon 2]
- @Omega_Sucal: "Are the Circle of Steel that were meant to be in Van Buren the same as the one that Christine formally/currently belongs too?"
@ChrisAvellone: "They're 1st iteration of Van Buren (BOS hardliners)."
(Chris Avellone's Twitter)
- Chris Avellone: "The revised take on the Circle of Steel was different (for me, they weren’t evil, they were just hardliners who thought the rest had drifted from the original principles of preserving tech and policing their own rogues – kind of like Internal Affairs)"