Hammers of Dorn - Notable Campaigns: The Dread Gestalt (353.M41) - When the Wyrdvane Psykers of the Vostroyan Firstborn 122nd Regiment came through a difficult Warp translation, they arrived in realspace as a gestalt entity of terrifying psychic power. Revelling in their new abilities, they rose up amongst the ranks of their former comrades in the Astra Militarum and enslaved every one of them to their bloodthirsty desires. When the regiment arrived on Sylvanus II they set about the murder of the populace. The Hammers of Dorn were sent on a planetfall mission to destroy the so-called "Dread Gestalt," but the powers of the Wyrdvane Psykers were so swollen that the Space Marine attack was repelled with terrifying ease. Only when the Culexus Assassin known as the Revoker was unleashed into the Vostroyan ranks did the Dread Gestalt lose its power, its individuals flopping back to earth as weak as newborns. They were killed to a man by Vostroyan bayonets even before the Revoker could close with his target to finish the job.Achilus Crusade (777.M41-Unknown Date.M41) - The Chapter's involvement in the Achilus Crusade had focused on the worlds known as the Blood Trinity, where the Hammers of Dorn had pursued, without recourse to the crusade's high command, a series of raids against the forces of Chaos holding the region. In all probability, the Hammers of Dorn were seeking to ascertain the truth of the rumour that the Word Bearers Traitor Legion was active in the area, pursuing their well-known hatred of this particular enemy. The Chapter recently fought a void-duel against the notorious Chaos Carnage-class Cruiser Black Grail, though they came off the worse in the engagement and were forced to withdraw, much to their chagrin. The Chapter's forces are currently refitting Karlack, and are by all accounts nearly ready to head out in search of their foes once more.The Vaxhallian Genocide (926.M41) - The Chaos Renegades known as The Purge choose the verdant Imperial world of Vaxhallia as their next victim. The planet's surface was soon riddled with consumptive disease and crippling famine. Over the course of a single solar month, The Purge engineered the destruction of no fewer than fourteen billion Imperial citizens. This atrocity did not long go unnoticed; Vaxhallia had served as an astropathic relay hub and a fortress-planet, vital to the defence of the Herakles System. As a result, when the Imperium finally responded, it did so in grand style. The entire Hammers of Dorn, Fire Lords and Crimson Fists Chapters initiated the planetstrike, reinforced by twelve battle-groups of Cadian Shock Troopers and the Imperial Knights of House Raven. Soon Vaxhallia was a roiling caldera of war that drew in forces from across the sector. Vaxhallia's fate grew yet more dire when the plague ship Terminus Est arrived in orbit, disgorging hundreds of Plague Marines and countless millions of Plague Zombies onto the planet's surface. Typhus led this fresh assault and, with each day that passed, more of the Cadians succumbed to the Zombie Plague -- soon the Space Marines and Knights found themselves fighting alone against a tide of Traitors and walking dead. When a second Imperial battlefleet arrived, its commander deemed the world irretrievably lost and began preparations to evacuate the survivors and commence Exterminatus.Nightfire Wars (Unknown Date.M41) - The Nightfire Wars were fought between the Imperium and the T'au Farsight Enclaves. The Iron Knights and Hammers of Dorn saw bitter combat in the campaign.