A ritual military organization consisting of a chivalrous tradition, mandated to defend the future of man from the misuse of advanced technology.

They are often opportunistic with very little love or respect for most Wastelanders, including Mutants and Vault Dwellers, though the latter aren't specifically targets.

A Might Makes Right philosophy amongst most chapters of the Brotherhood put them at odds with the majority of the wastes, though a wide spectrum of doctrine means no two chapters are very much alike.