Aldrik Voldus - Ultramar Campaign: Soon after the Ultramarines defeated the invasion of Ultramar by the Daemon Prince M'Kar and his allies among the Iron Warriors Traitor Legion, the Grey Knights Prognosticars saw a frightening vision of a darkness drawing nigh to the light of Ultramar, and a black blade, inscribed with the infernal star of the Chaos Gods, thrust at a heart enthroned. Even as one cavernous maw yawned wide, another set of jaws closed upon Macraggeand its sister worlds, ending the Prognosticars' visions in a sea of blood.Fearing that Ultramar, a vital bulwark amidst the greater ramparts of the Imperium itself was in danger of falling, and thus threatening the rest of the Imperium, Voldus ordered the entire 3rd Brotherhood to make its way to Ultramar and aid the Ultramarines in its defence. He sent word of the Grey Knights' coming to Ultramarines Chapter Master Marneus Calgar, who graciously accepted the aid of the potent Astartes psykers.After the arrival of the survivors of the fall of Cadia who called themselves the Celestinian Crusade alongside their xenos Ynnari allies, Voldus shared the Ultramarines officers' suspicion of the newcomers' plan to revive the Primarch Rouboute Guilliman, long in stasis in Macragge's Temple of Correction.When the forces of Chaos launched a massive assault on the temple to prevent Archmagos Dominus Belisarius Cawl and Yvraine, the Ynnari priestess of Ynnead, the Aeldari God of the Dead, from combining technology and divine power to heal Guilliman's mortal wound, Voldus fought hard to buy them more time.After Guilliman's successful resurrection following the battle in the temple, Voldus and his Grey Knights became a key component of the resurrected primarch's strategy to retake Macragge and all of Ultramar from the Archenemy. After a campaign of seven solar months, much of Ultramar had been retaken, but the Chaos Gods proved more than willing to prevent the primarch from using his abilities to aid the wider Imperium's defence from their growing power.Nurgle, the Plague Lord, unleashed a sorcerous disease upon the mortal soldiers of Ultramar. Called "the Sorrow," the disease possessed unnatural symptoms. In the midst of battle, warriors were blinded by endless streams of viscous, stinking tears that gummed their eyes open and soon turned them red raw. Overcome by sorrow, sufferers wailed and wept for solar days on end.In the worst cases, the so-called "Weepers" were permanently blinded as their infected eyeballs festered and rotted from their skulls. But Guilliman discovered that wherever he made his presence known, those afflicted with the illness were miraculously cured.So began long solar weeks of relentless pilgrimage for Guilliman, as he rushed from one site of sickness to another across the Ultramar region. The primarch knew that while he was engaged in healing his followers, his attentions were drawn away from the wider war. Yet of all the Emperor's sons, Guilliman was perhaps the most human, and his compassion would not allow him to ignore his followers' plight if he could heal them.Solar days became weeks, during which the Weeping continued to spread and -- worse still -- recur at sites that the primarch had already cleared. Without Guilliman's peerless genius the reconquest of Ultramar began to suffer, the Chaos forces overturning Imperial victories in the Veridian and Tarvan Systems. All the while, the dreadful Warp Storms that had riven Ultramar and its surroundings worsened further. Soon, whispered the Navigators, the empire of the Ultramarines might be cut off from the wider galaxy altogether, just as it once had ten thousand Terran years before during the time of the Ruinstorm.It was Aldrik Voldus who finally confronted Guilliman. In a heated argument, during which the grand master dared the primarch's wrath, he forced Guilliman to acknowledge that which he already knew. Weeks of labour had been for nought. Guilliman was not healing his subjects, for such was not his gift.In the Weeping Plague, Voldus recognised all the hallmarks of Nurgle. Most likely, the Plague God was simply withdrawing his dubious blessings from his victims upon Guilliman's arrival, then gleefully restoring them once the primarch had moved on. The Lord of Ultramar was playing into the Plague God's hands, his desire to save his people perverted into a never-ending trap of entropy and despair.Though furious, Guilliman accepted Voldus' wisdom. Further, he saw that Nurgle's desire had been to trap him within his own realm, and to keep him from the wider galactic stage. The primarch realised then that his desire for completeness, for a neat solution and an unsullied Ultramar was, in itself, an echo of mistakes he had made long ago.Nurgle did not wish Guilliman to leave Ultramar because there, the primarch could be contained like a wasp in a bottle. But this war did not belong to Ultramar alone -- it was a war for the entire Imperium. Guilliman saw that he could waste no more time focussing solely upon his own stellar empire. He must tend, instead, to his father's.