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The '''{{PAGENAME}}''' was a major [[Chaos]] and later inter-[[Imperial]] conflict occurring in the final days of [[M41]].{{Fn|1}}

[[Image:WolvesvsAL.jpg|thumb|right|120px|The Space Wolves battle the Alpha Legion{{Fn|1b}}]]

*{{Main|Battle of Nurades}}

*{{Main|Hunt for the Wulfen}}

Elsewhere, the [[Grey Knights]] were busy purging the many worlds now suffering from Daemonic incursion. They often arrived in the wake of the Spaces Wolves on their campaign, and on [[Mydgal Alpha]] [[Brother-Captain]] [[Arvann Stern]] discovered a corpse of a Wulfen warrior alongside the splattered remains of the [[Daemon Prince]] [[Mordokh]]. Thus the Grey Knights were alerted to the existence of the Wulfen.{{Fn|1b}} On the [[Shrine World]] of [[Vikurus]], the Grey Knights and Space Wolves meet to discuss what exactly is going on. Stern and [[Logan Grimnar]] come to an understanding regarding the Wulfen, and the Grey Knights [[Brother-Captain]] gives the [[Great Wolf]] a warning that the [[Thousand Sons]] may be making a move on [[Fenris]]. Alarmed, Grimnar rallies nearby Great Companies and makes for the Fenris System.{{Fn|1b}}

As Grimnar's fleet arrived in the [[Fenris System]], they found it besieged by the [[Ruinous Powers]]. Every world and planet in the system save Fenris itself was under assault. On [[Frostheim]], [[Alpha Legion]] [[Chaos Lord]] [[Vykus Skayle]] led the assault alongside Daemons flowing onto its surface from a [[Warp Rift]]. The Alpha Legion was successful in summoning a vast storm of Daemonic Rifts across the system at the decree of [[Abaddon]] himself.

On Valdrmani, [[Brother-Captain]] [[Arvann Stern|Stern]] led the assault to capture the dome-plex of Longhowl. They were opposed by two Tzeentchian Champions: [[Hekastis Nul]] and the last Infernal Tetrad Daemon Prince [[Tzen'char]] who had enslaved the worlds [[Astropath]]ic choir and bent it to the will of the Chaos Gods. Receiving reinforcements from the Space Wolves of [[Krom Dragongaze]], the Imperials pressed the attack. Krom and Stern reached the Astrophathic chamber just as Nul completed his ritual, turning it into a vision of hell. Stern slew Nul, but it was too late as waves of Daemons burst forth onto the planet led by Tzen'char. Stern and Krom managed to combine their efforts and strike down the Daemon Prince, causing the Daemonic host to be driven back into the Warp.{{Fn|1c}}

As the Fenris System burned, the Dark Angels arrived. Led by [[The Rock]] itself, the Dark Angels were not alone. They had brought fourteen [[Chapter]]s with them including the [[Ultramarines]] 6th Company, [[Howling Griffons]], [[Red Consuls]], [[Marines Malevolent]], [[Shadow Haunters]], [[Guardians of the Covenant]], [[Doom Griffons]] and [[Clan Haarmek]] of the [[Iron Hands]] Chapter. The Crusade fleet also included the [[Knights]] of [[House Mortan]], the [[Titans]] of [[Legio Dominatus]], two [[Imperial Navy]] sub-battlefleets and three [[Astra Militarum]] Army Groups{{Fn|3}}. The Dark Angels expressed their intent to cleanse the System of Daemonic taint and they would not allow the Wolves to fall into damnation. With that, from the deck of the [[Gloriana Class Battleship]] ''[[Invincible Reason]]''{{Fn|5}} Azrael ordered that the bombardment of Fenris begin.{{Fn|1c}}

[[Image:MidgardiaAmbush.jpg|thumb|right|200px|The [[Thousand Sons]] invade Fenris]]

Just at his moment of triumph, Egil Iron Wolf charged at Magnus with the [[Spear of Russ]]. The Wolf Lord was vaporized from the waist up, but Grimnar was able to catch the Spear and drive the [[Axe of Morkai]] into the Daemon Primarch. The weapon had in fact been forged by [[Khorne]], and its energies were enough to harm the Crimson King. This in turn gave the Grey Knights [[Purifiers]] enough time to conduct a banishing ritual, sending Magnus back to the [[Warp]]. With him went the Thousand Sons and their Daemonic allies. Now all of the Traitors and Daemons had been pulled back into the Warp, and those remaining were quickly hunted down by the remaining Imperials.{{Fn|4c}}

In the aftermath of the war, Fenris was saved but devastated and few Imperial defenders were left. [[Frostheim]] had been reduced to a wasteland of bone, its icy mantle melted away to reveal a thick stratum of fossils. There were those who said that under the new moon some of these skeletons came alive, hunting for the blood of those mortals still eking their lives from the osseous wastes. [[Svellgard]], the ocean moon, was evacuated over the course of a long and difficult month. As it passed close to the [[Wolf’s Eye]], it was subjected to a barrage from solar storms induced by Midgardia’s demise. Solar flares lashed its surface, turning the once-tainted seas to steam. Though barren, it was subsequently resettled, its sandy islands turned to mountains of glass amidst the hard-baked crust of the seabed. [[Valdrmani]], the Wolf Moon, remained a hellish wasteland. It had been the site of a Daemon ritual of surpassing size, and though it had since been reconsecrated there were sightings of Warp-gheists for weeks. The moon was wracked by electrical storms and hurricanes of flesh-stripping intensity, but it rode out the catastrophe, rebuilt by the Adepts of the Imperium into an [[astropath]]ic relay station. As was the case with the [[First War for Armageddon]] the [[Ordo Hereticus]] and Grey Knights purged the [[Human]] survivors of the campaign, for they had witnessed a Daemon Primarch itself. With reluctant approval, Grimnar doomed the tribal warriors of Fenris to liquidation.{{Fn|4c}}

Meanwhile within the Warp, Magnus roared a howl of triumph. His plan had succeeded and [[Sortiarius]] was transported by a ritual fueled from Midgardia's sacrifice. It reappeared over desolate [[Prospero]], bringing with it a great [[Warp Rift]] and hordes of Daemons. The Imperium would never be the same.{{Fn|4c}}

*{{Endn|1}}: [[War Zone Fenris: Curse of the Wulfen]],{{Cite this}}

**{{Endn|1a}}: Chapter 1