Fall of Dakvos

The Fall of Dakvos was a lamentable campaign conducted by the Invokers Space Marine Chapter to free the besieged Imperial world of Dakvos from the clutches of the nefarious Thousand Sons Traitor Legion. Tragically, the company that was sent to liberate the planet were caught in a deadly trap, which saw many of their number slaughtered. However, the Invokers commander would not be deterred, and with righteous wrath, launched a deadly orbital bombardment that saw the destruction of the Heretic Astartes.

History
When the world of Dakvos was beset by the Heretic Astartes of the Thousand Sons Traitor Legion, they requested assistance from the Astartes of the Invokers Chapter. The newly appointed 3rd Captain Zephyer Kize led his whole company to the planet, and made planetfall at the governor's palace with all his men at his back, so that action could be taken as soon as a counter-offensive was planned. The moment they hit the ground, they were ambushed by Thousand Sons Heretic Astartes and the forces of the traitorous planetary governor. Kize and a handful of battle-brothers barely managed to escaped to space, where Kize in his grief-born fury, ordered orbital bombardment on all the city centres. The death toll was catastrophic and quickly rose in the billions, only the Thousand Sons' own base was spared, saved by some dark warp magic. Kize led what little forces had of his company into the base, and destroyed it, suffering near total casualties in the process. Only Kize and a single battle-brother survived the campaign.