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==={{Endn|Conflicting Sources}}===

Rogal Dorn can be presumed to have survived to at least 100 years after [[Second Founding]] in 021.M31{{Fn|43}}{{Fn|42}}. While conversing with [[Chaplain]] [[Segas]] on [[Sotha]], [[Oberdeii]] refers to the Second Founding as having occurred at least a hundred years ago (and that [[Roboute Guilliman]] was already wounded by [[Fulgrim]] by that point). Segas in turn refers to Dorn as alive and in command in the present tense, having already petitioned the High Lords to approve the upcoming [[Third Founding]] forty years prior their conversation. Thus (presuming Segas was not misinformed due to delayed information) this puts one of the last dates he is presumed to be alive as at least 121.M31, approximately 600 years prior to the [[1st Black Crusade]] in 781.M31{{Fn|41}}{{Fn|42}}.

In the [[Index Astartes II]], Dorn's death is said to have taken place "soon after the disappearance of his brother", [[Corvus Corax]]. This account details that during "a Black Crusade" (which one is not stated) a call for aid was sent to the Imperial Fists. Allegedly the [[Imperial Navy]] had failed to discover until too late, a Chaos Fleet amassing at the [[Pelenos Belt]] massing to launch an attack on the [[Cadian Gate]]. With most of the chapter being deployed to shadow [[Craftworld]] [[Ulthwe]], Rogal Dorn could only muster three companies of Imperial Fists and Marines. He personally lead an attack on the fleet, ramming a ship under his command into the [[Despoiler Class Battleship]] Chaos ship the ''[[Sword of Sacrilege]]'' - where he would make his final stand. Only after his demise did Craftworld Ulthwe seemingly vanish, freeing the remaining chapter and the [[Phalanx]] arrive to fully defeat the Chaos Fleet, having discovered that the original message was a ruse, and that the Black Crusade was not attacking Cadia. The Imperial Fists "boarded the ''Sword of Sacrilege'' before it could flee and recovered what remained of Rogal Dorn. His engraved skeletal hand continues to be maintained in stasis, their holiest icon"{{Fn|2a}}. However, according to [[Battlefleet Gothic]] the Despoiler class ship wasn't designed until mid-[[M36]], having originally been an Imperial warship class that fell to Chaos.{{Fn|8}} Whether this is an oversight on the class of warship, or if Dorn did indeed lead the Imperial Fists for several millennia, is unclear. Furthermore, prior to the [[13th Black Crusade]], only the 1st Black Crusade was known to make a dedicated assault on Cadia, making it possible that the event took place in other Black Crusades besides the 1st (though ostensibly not the 13th).{{Fn|41}} It is possible that, like Vulkan, Rogal Dorn remained in hiding and only appeared again when he believed the hour was needed.

At no point in [[M32]] during the [[War of the Beast]] is Rogal Dorn spoken of by the Imperial Fists as though he were alive and in command of the Imperial Fists. However, during that war, Vulkan commended [[Koorland]] that his actions honored Rogal Dorn and that he "will tell him so." It is therefore possible that Rogal Dorn did indeed vanish from the Imperial public light shortly after Corax and the [[Great Scouring]], but that like Vulkan, he remained alive and in hiding and only surfacing to lead the attack on the unspecified Black Crusade.{{Fn|8}}