The Miles Rufus Astartes, commonly referred to as the Twelvers, or the Red Guard, are a twelfth founding chapter of the Adeptus Astartes, or Space Marines. They arrived in the Agrippa Sector towards the end of the Kali Crusade, and rapidly rose to prominence after their near anhillation of the Schwarzchildes. Initially co-operating with the local chapter, the Victrix Astartes, they later suppressed that chapter after it was excommunicated for heresy. This elimination combined with several other events to propel the Twelvers to pre-eminent position among the chapters in the Agrippa Sector: