Meritas Cluster Campaign

The Meritas Cluster Campaign was a an Imperial campaign carried out against the rebellious Meritas Cluster that had fallen to the corrupting influence of Slaanesh. During the conflict, the Astral Leviathans Lord Commodus (Chapter Master) was slain, but the Imperium managed to emerge triumphant.

History
Astral Leviathan detachments where deployed in the Meritas Cluster along with the Legio Arctica, under request of the Ordo Hereticus. A cult of Slaanesh had taken root in the systems government and corrupted the Planetary Governor to the dark desires of She Who Thirsts. The cult had spread much deeper than anticipated and turned a greater majority of the populace along with the Planetary defense forces present in the system. The Leviathans landed with great zeal and hatred for those who would betray the Imperium. Their zeal and the weapons of the titan legio made quick work of the outer-most planet scouring it of taint and quarantining the refugees that they allowed to live for interrogation by the Ordo Hereticus at a later date. When moving onto the next planet they were met with much greater resistance. This was a penal world, the arbites present having been corrupted along with most of the inmates, and those that did not fall to the dark temptations were sacrificed to weaken the veil and bring force a host of Slaaneshi daemons.

The Astral Leviathans fought hard for every square foot of the planet, the piles of enemies slain becoming monuments to the zeal and lethality of the chapter's forces, after four months the Astral Leviathans broke into the last stronghold on the world, Merital penal block C-139856EA. Regulus Proctus, the Lord Commodus, ended the siege when he dueled and slayed a Keeper of Secrets. The duel cost him both legs and an arm, resulting in his entombment in a venerable Leviathan chassis siege dreadnought. With the Lord Commodus out of commission and no time for the proper rituals to elect this successor the rest of the campaign was lead by the Grand Lore Master, Aurelia Cesar. The campaign only gained momentum after the death of the greater demon. The heretic forces falling quickly under the might of the Imperium's forces.