Editing Medhammer 40,000 Primarchs (section)

===After The Great Treachery===
His legion was mostly intact, but he took the injuries his Father and Terra sustained very personally. The fact that his father was only wounded, and that there was only a continent sized crater on Earth did little to lift up his spirits. Dorn resigned from his Position as The Emperor's Praetorian, and wandered the galaxy. At some point in his self-imposed exile of he stumbled upon rumors of Hive Fleet Tiamet. He and his men followed through and in M33 he encountered Ziaphoria's Tower. Ordering an excavation of the tower. Through this Dorn has learned the awful truth of what is coming, and that Humanity is not prepared. Perturabo's words ringed in his soul and he suddenly realized his true calling. He saw an entity who, like him, had no concept of surrender, no notion of the cost of war, no instinct except endurence and adaptability. Discovering new found purpose he returned to Terra and formally requested that the Segmentum Tempestus be handed over to him. The Sector, which was divided among the already overworked brothers, were more than happy to have their brother back and active in Imperial affairs again. They readily granted it to him. Now in control of the Segmentum, He immediately set to work. All local leaders who opposed his rule or designs were expelled (this now includes the nomadic fleet Tallarn, who opposed the engineering of their home system). All resources in the Segmentum, be it human, material or spiritual, exists for the fortifications of the Segmentum. Planets, drained of their mantle for Ore, stars have gone dark from Dyson spheres, asteroid fields lay vacant, gas giants Syphoned to their core. At the Center of it all lay Inwit, once an ice world now a Fortress world three times the size of its old planet, surrounded by rings and floating fortresses.