First Calidas Campaign

The First Calidas Campaign was an Imperial castigation campaign carried out by the Ardent Shields Space Marine Chapter against an invading force of Daemons of Tzeentch that attempted to conquer and enslave the forge world of Annihilation. During this campaign, the Chapter sustained the highest amount of casualties in their Chapter's history, and were only able to achieve victory with the assistance of Imperial reinforcements. In gratitude for saving their forge world, the surviving Magos gifted the Chapter with a mighty Retribution-class Battleship.

History
During this lamentable campaign, the Chapter sustained the highest number of casualties in their Chapter's history, losing almost 60% of the 1st Company, including the Comitatu Imperator and most of their Terminators, 20% of the 3rd and 5th Companies along with their Caput Magister in defence of the forge world of Annihilation from a incursion of Daemons of Tzeentch that had hoped to conquer this world for their conniving god. The battle for the planet turned into a massive defensive campaign for the Ardent Shields due to the high amount of daemons, the tide only turning from the arrival of a Titan Legion and some nearby Astra Militarum Regiments. This would lead to over a year of fighting before the final climactic battle between Comitatu Imperator Kratos and the Greater Daemon leading the invaders which would end in a draw, both Kratos and the daemon liying defeated. In gratitude for their sacrifice and defense of the forge world, the Tech-Priests gifted them the recently repaired Retribution-class Battleship Salvation, as it was all they could offer due to the extensive amount of damage the forge world's manufactorums had sustained during the conflict.