"Do you remember when Eldrad died, or when Abaddon had obtained the mysterious object from the center of the Eye known as the Heart of Chaos? Well apparently the most momentous event in recent 40k lore has disappeared."
The Imperium was not blind to these ominous signs though and began massing it forces in preparation for the hammer blow they knew was going to be coming. Every Cadian regiment was called back to their home world for a muster on the Tyrok Fields. The Cadian high command recieved each regiment as it landed, and here the Volscani Cataphracts carved their name into history. In a single act of betrayal they opened fire on the Leviathan's of the Cadian high command knocking out their void shields before boarding them and slaughtering them to a man. The traitorous forces were defeated when Ursarkar E. Creed took command of the surviving Cadian forces and it was after this event that he was declared Lord Castellan.
Typhus led his forces into the Agripinaa sector and nearly brought them to ruin were it not for the intervention of the Howling Griffons. The battles becoming a grueling ordeal of trench warfare in near inhospitable conditions. Meanwhile the Emperor's Children, Night Lords and Alpha Legion raided and pillaged across the other sectors. With the entire region embroiled in conflict Abaddon pushed straight for the Cadian system. The outer defenses of the system quickly collapsed and Chaos gained the foothold it needed, capturing the prison world of St. Josmane's Hope to bolster it's forces. Meanwhile the Iron Hand's home world of Medusa was invaded and the entirety of the Chapter was forced to defend it in the largest tank battle since Tallarn.
Without Imperial aid the Agripinna sector fell into ruin at Typhus' hands, he even turned the world of Ulthor into his own personal demon world outside of the eye. In a last ditch effort Eldrad Ulthuan led a strike force onto a Blackstone Fortress that was tearing apart the surface of Cadia. As he melded with the Fortress' heart he realized what a horrible mistake he had made as his soul was devoured by the Greater Demon of Slaanesh that now made it home. The surface of the planet was heavily contested and Imperial command had to abandon many of the Kasrs, or cities, and retreat to the opposite side of the world. Although Chaos had a firm control on many of the planets the Imperium now controlled the space lanes, leaving the area largely contested.
It is rumored that Abaddon's chief sorceror travelled to the center of the Eye of Terror and obtained a near mythical object known as the Heart of Chaos for his master. What this object is and does no one knows, but it cannot be good. The Eldar succeeded in repelling Ahriman and the Thousand Sons from the webway and even recaptured several crone worlds. It is also reported that a craftworld that had been lost within the Eye since the fall has suddenly reappeared with its ghostly warriors. At some point during this whole ordeal the highly suspect Relictor's chapter was declared Excommunicate Traitoris and their space faring fortress monastery was assaulted by an Inquisitorial task force that spread the remnants of the chapter into the Eye. Even though the Tau were on the other side of the galaxy they took the opportunity while the Imperium was distracted to launch their Third Sphere of expansion which was the most successful gain by any faction.
The 6th Edition Chaos Marine Codex makes no mention of the crusade happening and again makes it appear that we are right on the brink. It even mentions how the Demon Primarchs are reported to be leading their legions again in preparation for the Crusade. Again this seems like a misstep to me as it has been inferred that the Primarchs had their shot and failed in the Heresy and now it is their children's turn in the form of Abaddon, Typhus, Kharn, Ahriman, etc. This seems like a much more interesting idea and the Primarchs are most likely just being talked about again due to the popularity of the Horus Heresy series. If reports are to be believed from the new Eldar codex Eldrad has also been revived with his sacrifice written out.
Despite their attempts to erase this event they have done a somewhat uneven job at it. In the novel Atlas Infernal about Inquisitor Czevak the events seem to take place after his imprisonment by Ahriman, which took place during the Crusade. There is also a rogue Relictor marine in it who makes mention of the disbanding of his chapter.
Have they merely turned the clock back with the intention of it playing out the exact same way or is it a whole new game. I would really like a definitive statement on this by GW to clear the air. I hope this is all just leading up to a repeat of the 13th Black Crusade but somehow I doubt it. I think their train of thought is all of the possible outcomes from it are more interesting then anything that could actually happen in a global campaign.
You can read a more detailed history of the Crusade on Lexicanum here.
"What are your thoughts on this? Are you disappointed as well that they have erased a seminal part of 40k history? Did you play through Abaddon's greatest Crusade?