Sigismund served beside the Imperial Fists Legion's Primarch Rogal Dorn himself, and would fight throughout the entirety of the Great Crusade. Famously brash and headstrong, he had a tendency to attack the enemy head-on, no matter the danger or mission he had been sent to accomplish. This tendency might have been a problem if he had not been such a superb warrior who could defeat almost any opponent. A sombre and deadly warrior, both indefatigable and remorseless in the fray, Sigismund was to onlookers less a mortal warrior but rather some unstoppable agency of the dark fates. This led none other than the Blood Angels' Primarch Sanguinius to remark of him he seemed, "...less my brother Dorn's champion, and more Death's himself..." Sigismund's skill was legendary, even among the transhuman