Editing MidHammer 40,000 (section)

===Rogal Dorn===
Title: The Great Architect.

Rogal Dorn, ashamed for his failure to protect Father from harm at the climax of the Letdown, ignored his brothers' calls and vanished into the galaxy in self-imposed exile, with only the Imperial Fists 1st Company following him, though they returned to Terra months later on the Phalanx without Dorn to deliver Dorn's apparent orders for the rest of the Imperial Fists. With such a hasty exile, Dorn was not present when the Emperor awoke from restorative suspended animation. Hearing of His son's departure, the Emperor is said to have wept for three days, and all remaining loyal Primarchs stayed with Him in the Sanctum Imperialis for the duration of His anguished sobbing, silent before their father as the brothers and their father, this family, took in the ramifications and gravity of the Lorgar Letdown and the loss of their wayward brothers to Chaos, including their Astartes lost to the conflict and the mass-loss of Leman Russ' entire Legion to mutation.

Though the Imperial Fists 1st Company marines refused to reveal Dorn's location to any, refusing even the Emperor several centuries down the track when He mustered His strength and asked (much to the Khan and Horus' utter seething outrage), the Emperor allowed this treason in light of it being the decision not of the marines but of their primogenitor, the Emperor's son. The Emperor said He understood Dorn's shame, and would respect His son's decisions and desire to remain hidden as he sought atonement, for that is what the marines have admitted is Dorn's goal; atonement. They claim not to even know what exactly Dorn plans to do or is doing in order to atone for failing Father.  (>The Emperor should rip the knowledge from their minds anyway.  Because if Dorn is needed and can't be contacted, things can get Grimdark real quick.  That, and now is ''not'' the time to allow Astartes to say "no" to the Emperor after the Lorgar Letdown.  No way.)
(>>He gleaned enough to know His son would come when he was ready. Ignoring the plights and feelings of His sons and pushing them around is how the Lorgar Letdown happened, and He recognizes that.)