Hellion Purgation

The Hellion Purgation was a massive joint-Imperial castigation campaign conducted by multiple bellicose and savage Scions of Sanguinius Space Marine Chapters, including; the Golden Seraphs, Blood Scorpions, Charnel Brethren, Crimson Raptors, Sanguine Berzerkers and Wings of Salvaxes. This brutal campaign of reciprocity was conducted against the Chaos-held Hellion Sector that had fallen in the previous millennia due internecine conflict of the War of the False Primarch.

History
In the wake of the anarchy that followed the murderous internecine conflict of the War of the False Primarch and its aftermath, the Hellion Sector declared its secession from the troubled Imperium in 870.M33. Bloodily attacking its neighbours, it becomes quickly apparent that the sector's rulers had fallen then to the worship of Chaos, and its millions of men-under-arms were corrupted and given over to darkness, while its mass manufactora were turned to churning forth twisted war machines consecrated to the dark gods. The ever widening war swells to ravage more than eighty inhabited systems and uncounted billions die in the fighting.

By the dawning of M35, the Hellion Sector and its environs are reduced to little more than a waste zone of barren worlds and dead hive cities. Unwilling to let the Ruinous Powers maintain rule over an Imperial sector, the High Lords of Terra immediately call for an Imperial Crusade to be launched, to retake the Chaos-held region. Several bellicose and bloody-handed Scions of Sanguinius Chapters - including the Golden Seraphs, Blood Scorpions, Charnel Brethren, Crimson Raptors, Sanguine Berzerkers and Wings of Salvaxes - eagerly joins the massive Imperial flotilla that is making its way towards the Hellion Sector, to bring the Emperor's divine wrath against the heretic forces of the Dark Gods.

The Chapters of The Blood launch themselves wholeheartedly into fallen sector, declaring a 'Day of Revelation', in which the Scions of Sanguinius are unleashed against the followers of Chaos. Many of the Chaos Warbands and daemonic legions confronted by the massive host comprised of the most savage of Sanguinius' get, are overcome with dread and awe, as the savage fury and blinding destruction delivered upon them by these Chapters of the Blood are near-apocalyptic in scale. Despite the large number of daemonic legions and formidable Chaos Warbands arrayed against the them, these ferocious Astartes deliver the Great Angel's wrath upon one benighted world after another.

Extant records indicate that no few worlds still speak in awe of when the angels fell from the skies to free them from the oppression of their daemonic overlords. Within a span of two years, the Chapters of The Blood bring salvation to the once-benighted worlds of the Hellion Sector and fully purge the taint of Chaos from this region of the galaxy.