Aurelian Crusades - Third Aurelian Crusade: This third and final campaign in the Aurelian Sub-sector took place ten standard years after the banishment of Ulkair. Despite the banishment of the Greater Daemon of Nurgle and the defeat of the Black Legion, the worlds of the Aurelian Sub-sector remained gripped by constant warfare and bloodshed.More Black Legion forces and Chaos Cults arose to cause havoc throughout the sub-sector, while Imperial forces struggled with the feral remnants of the Tyranid invasion, and Orks continued to ravage the fringes of every world. The Aeldari still raided from the shadows, whispering of the remains of a long-fallen Craftworld.In this situation, the Imperium had finally reached the limits of its patience. In a bold effort to restore full control over the sub-sector, Imperial Segmentum Command sent several regiments of the Cadian Shock Troops of the Astra Militarum to the sub-sector, led by the Ordo Hereticus Inquisitor Adrastia, who had been tasked with conducting an investigation of the Blood Ravens and determining whether they had been hopelessly corrupted by the Archenemy.She was to make her determination before the arrival of a large Ordo Malleus Retribution Fleet, which was ordered to subject every inhabited world in the sub-sector to Exterminatus if the corruption was deemed to run too deep.The Imperial Guard forces quickly took control of the sub-sector's various Planetary Defence Forces. The bulk of these troops had been deployed to Typhon Primaris, a world whose dense jungles provided sanctuary to both aliens like Orks and Tyranids as well as Heretics.However, progress was slow, and the Imperium was increasingly ready to unleash the fires of Exterminatus. But the recently arrived Imperial forces under Adrastia's command actually did more harm than good in the end, as hundreds of Guardsmen fell victim to the whispered temptations of the Ruinous Powers, causing dissension within the ranks.Having uncovered heresy in the highest ranks of his Chapter, Blood Ravens Captain Gabriel Angelos had been branded as a Traitor by his corrupt Chapter Master Azariah Kyras. Unwilling to spill the blood of his brother Space Marines, Gabriel had gone into hiding.There, he gathered what few friends and allies he could, readying himself to oppose the Chaos taint that consumed his brothers. Unable to confront Azariah Kyras directly, the now-Renegade Captain Angelos was forced to rely on those men still loyal to him to help prove that their current Chapter Master was corrupted by Chaos and was the true Traitor.Later, Angelos and his Renegade Blood Ravens determined to eliminate Azariah Kyras once they learned that he planned to use the impending Exterminatus action of the sub-sector by the Ordo Malleus Retribution Fleet as a sacrifice to Khorne and ascend to daemonhood. Unfortunately for Angelos, Captain Apollo Diomedes still believed that Chapter Master Kyras was loyal.During the beginning of the campaign, Diomedes, Techmarine Martellus, Scout Sergeant Cyrus and a respected Veteran Space Marine sergeant known only as "The Ancient," who was in fact the former Sergeant Tarkus, fought their way across Typhon to root out and eventually destroy the Black Legion Chaos Lord Eliphas the Inheritor, resurrected once more by his dark patrons.Diomedes and his Blood Ravens attempted to reach a means of transport off Typhon while escaping the clutches of a local Chaos Cult and Traitor Imperial Guardsmen along the way. Arriving on the world of Calderis, the Blood Ravens fought against their corrupted battle-brothers who were loyal to Kyras, successfully preventing them from purging the planet of all human life.After next destroying a Warp portal on the former sub-sector capital world of Aurelia, Diomedes learned of an attack on the Hive World of Meridian by Traitor Guardsmen and arrived there with his forces.The Blood Ravens succeeded in killing the Traitor Guardsmen present on Meridian and uncovered a transmission from Kyras that not only revealed his location on Typhon, but also finally convinced Diomedes that Kyras had been corrupted by Chaos. Diomedes and his Astartes returned to Typhon Primaris to confront Kyras directly, only to be ambushed by a war host of Asuryani from Craftworld Biel-Tan.Wary of a seemingly sorcerous ritual the Aeldari were carrying out, Diomedes and his Space Marines slew the Aeldari present there. Following this action, Kyras revealed that the Aeldari ritual was actually preventing the Imperial Inquisition Retribution Fleet from arriving at the sub-sector through the Warp.The Inquisition fleet then made the jump into the sub-sector from Warpspace, and initiated the expected Exterminatus action on Typhon Primaris. Diomedes and the Loyalist Blood Ravens escaped Typhon before the Exterminatus was complete, but the once verdant jungle world of Typhon Primaris was reduced to ash.Finding themselves on the Space Hulk known as the Judgment of Carrion, the Loyalist Blood Ravens recovered and determined to stop Kyras once and for all. It was deduced that the Traitor Chapter Master was hiding on the Dead World of Cyrene, Angelos' own lost homeworld.As Cyrene had undergone an Exterminatus action of its own at the order of Gabriel Angelos many solar decades before, the Inquisition's Retribution Fleet had no reason to travel there. On Cyrene, Angelos and his Blood Ravens launched an attack against a joint alliance of Black Legion Chaos Space Marines, corrupt Imperial Guardsmen and Traitor Blood Ravens.Kyras began his ascent to daemonhood as the battle unfolded, drawing on the power created by the sacrifice of billions across the sub-sector as the Inquisition's genocidal actions proceeded. Gabriel and his 3rd Company, supplemented by Terminators of the elite 1st Company, launched an attack on Kyras but were quickly wounded or killed.But the group of Loyalist Blood Ravens under the command of Diomedes then launched their own attack, which succeeded in killing Kyras just as his powers as a newly-ascended Daemon Prince emerged.Diomedes immediately contacted Inquisitor Adrastia and requested that she halt the Exterminatus of the Aurelian Sub-sector since the source of the Chaos taint had been eliminated. The Blood Ravens Chapter was subsequently purged of any remaining Chaos stain, its corrupted battle-brothers eliminated with a bolter shot to the head.Gabriel Angelos was rescued from the precipice of death by the Chapter's Apothecaries, who replaced large portions of his ravaged body with bionic augmentations.For his loyalty to the Emperor and consistent leadership through the myriad crises of the Aurelian Crusades, Angelos was elected the Blood Ravens' new Chapter Master by acclamation.Angelos became the first Chapter Master of the Blood Ravens since Azariah Vidya not to also serve as the Chapter's Chief Librarian, a position now filled by Jonah Orion.