User blog comment:StormWarriors2/Join the Crusade! Abruptia!/@comment-30488984-20170625020135/@comment-30488984-20170625085458

Well these guys were Iron Warriors that splintered from the main force and tried to create their own realm within the Halo Stars. Its possible a cohort dropped out of the warp off target while trying to translate to another system, which could be interesting since these guys like to enslave xenos and modifiy them in Fabius Bile style.

But up to you! Let me know if you want me to expand on the idea and create a page/sub-section on the main page of the Steelblood Legion and you use it as you will.