Rogal Dorn - Death: Dorn was one of the most long-lived of the primarchs, but with the death or disappearance of each of his brothers he grieved more and more. He witnessed the phenomenon of many of the primarchs coming to be regarded as demi-gods by the peoples of the Imperium in the 31st Millennium, and spoke out against the practice, proclaiming that the Emperor alone was worthy of such devotion, for each of His sons had failed Him in some manner.It is generally believed that Dorn fell in battle against the forces of Chaos in 781.M31, while resisting a large Chaos fleet during the 1st Black Crusade -- the first of the periodic and devastating incursions into Imperial space by the Traitor Legions from their hellish sanctuary worlds within the Eye of Terror. Commanded by the returned Abaddon the Despoiler, the Chaos fleet vastly outnumbered the Imperial force.Seeing the importance of attacking the enemy fleet while they were still preparing to invade Imperial space, Dorn relied on hit-and-run attacks until his reinforcements could arrive. Dorn and three companies of the Imperial Fists mounted a masterful series of boarding actions against the crusade's warships, crippling drives and life support systems and even capturing weapons batteries and turning them against other Chaos vessels.Eventually, however, the enemy cornered Dorn and his warriors as he launched a final attack on the bridge of the Chaos flagship, the Despoiler-class Battleship Sword of Sacrilege. None survived to tell the glorious tale of the primarch's last stand.All that remained of the primarch was his hand, which was recovered by the Imperial Fists of that era and which is kept in stasis by them aboard the Phalanx.Dorn's now-skeletal left fist is kept within a shrine aboard that mobile fortress-monastery, the bones intricately engraved or "scrimshawed" with the heraldry of all the Chapter's previous masters. Only the Imperial Fists' Chapter Master has the right to engrave his name upon the bones. For instance, upon the first metacarpal are inscribed the names of Bronwin Abermort, Maximus Thane, and Kalman Flodensbog, while upon the first phalanx of the thumb is the name of Ambrosian Spactor, and so forth.This Hand of Dorn is the Imperial Fists' holiest icon and it serves as a reminder of the sacrifice and commitment expected of every Astartes.So it was, that throughout the Imperial Fists' history -- from the Ork onslaughts of the 32nd Millennium to the 13th Black Crusade -- they have drawn inspiration from their primarch's remains and resolved to defeat their foes or die in the attempt. Whether the fist actually belongs to Rogal Dorn or his remains lie elsewhere, is unknown.Despite his apparent death during the 1st Black Crusade, Dorn's true fate as yet remains unclear. During the War of the Beast in the mid-32nd Millennium, the resurrected Primarch Vulkan stated to Koorland that he would speak well of that Imperial Fists master to Rogal Dorn, implying his brother primarch yet lived.According to Konrad Curze after the end of the Horus Heresy, however, Dorn is dead, killed in action after being torn to pieces by the enemy during his assault on the Sword of Sacrilege. This fate had been foreseen by the Night Haunter when the two brothers had met on Nostramo. Curze would confirm this outcome standard years later as he reflected on the past while awaiting his assassination by M'Shen.