Iacton Qruze - Betrayal: During the Battle of Istvaan III, where Horus planned to purge all the remaining Loyalist elements of the Traitor Legions under his command, he had the entirety of the Remembrancers within the 63rd Expeditionary Fleet brought aboard his flagship Vengeful Spirit to witness his greatest triumph.Within the flagship's audience chamber the Remembrancers looked on in horror, clinging to one another as they wept, and witnessed such a monstrous genocide perpetuated upon Istvaan III that they were unable to comprehend the scale of slaughter that had just been enacted in the name of the Imperium.Led by Euphrati Keeler, Mersadie Oliton and Kyril Sindermann approached a lone Astartes warrior who stood apart from his fellows. Qruze's body language spoke of the horror that he was witnessing as the deadly events of Istvaan III played out. The Remembrancer approached the old Astartes.Euphrati explained to Qruze that he was the only one that still clung to the honour and the valor from which the Luna Wolves were forged. He was the only one who remembered, for he was the only one left that still embodied what it was to be an Astartes.Conflict raged within the old captain's soul -- loyalty to his Legion vied with loyalty to the ideals that had forged it. Finally, he came to a fateful decision and decided to get the Remembrancers to safety.It was not until that moment that he fully understood why Loken had requested that he keep them safe.Fleeing the Sons of Horus' flagship aboard a stolen Thunderhawk, the small group of Loyalists were guided towards the Death Guard frigate Eisenstein by Keeler, which was under the command of the Loyalist Battle-Captain Nathaniel Garro of the Death Guard's 7th Great Company.The frigate picked up the Thunderhawk on an intercept vector with their ship. The pilot identified himself as Third Captain Iacton Qruze, formerly of the Sons of Horus. He claimed to be no longer part of his Legion as he could no longer be a party to what Horus was doing.Garro let the Thunderhawk land upon the frigate. It bore three refugees from the slaughter of civilians that Horus had unleashed upon his flagship. Garro immediately granted them sanctuary.Escaping with his fellow Loyalists, Qruze endured all the horrors the crew of that vessel encountered during their harrowing journey to reach Terra to bring warning to the Emperor of Horus' betrayal. Qruze formed a strong bond with Nathaniel Garro during the flight of the Eisenstein.After arriving in the Sol System with the terrible news of the betrayal, Garro, his fellow seventy Death Guard Astartes, Euphrati Keeler and Iacton Qruze were all placed in a fortress on Luna that belonged to the Sisters of Silence while the Emperor determined whether they were truthful or were simply further pawns of the Chaos Gods.Garro, Qruze and the Sister of Silence Amendera Kendel were approached by Malcador the Sigillite, the Regent of Terra, and told that the Emperor needed them to form a new Imperial organisation, outside the boundaries of the existing Imperial bureaucracy, which would utilise "...men and women of inquisitive nature, hunters who might seek the witch, the traitor, the mutant, the xenos."The Emperor had foreseen that the end of the Horus Heresy would cost Him greatly, so much so that He would no longer be able to take an active hand in Mankind's survival.Yet He also knew that the threat of Chaos would not see defeat with Horus, but would continue to haunt Humanity.The very nature of the Horus Heresy had proven that the Space Marines were not immune to corruption as the Emperor had once hoped. So the Emperor set His hand to plans that would win a wider victory from the ashes of a most personal defeat.Malcador the Sigillite was ordered to scour the galaxy for those who would be found worthy to help save the future of Humanity. This was a monumental task made all the more difficult by the anarchy created by Horus' insurrection.That is how the Sigillite came to be on Luna, and the fate of these three individuals became inextricably intertwined with the future survival of all Mankind.