After the resurrection of Guilliman in late [[M41]], he began to see many of the flaws that came from overly-strict adherence to the Codex Astartes. As a result, he has reformed much of the Codex and eliminated much of its restrictions on Space Marines. New additions include the addition of [[Primaris Space Marine]] formations such as [[Intercessor]], [[Aggressor]], [[Inceptor]], and [[Reiver]] Squads, as well as the inclusion of two [[Space Marine Lieutenant]]s below the Company Captain, each commanding a demi-Company. Furthermore, Squads in the Codex Astartes are now defined as [[Battleline Squad|Battleline]], [[Close Support Squad|Close Support]], or '''[[Fire Support Squad|Fire Support]] Squads'''. These formations exist alongside [[Space Marine Veteran|Veteran]] Squads, and [[Space Marine Scout|Scout]] Squads, and [[Vanguard Space Marine]] Squads.{{Fn|15a}}{{Fn|15b}}