Fall of Dolumar IV

The Fall of Dolumar IV was an Imperial castigation campaign conducted against both the nefarious Tau Empire and a Chaos Warband of the infamous Word Bearers Traitor Legion.

History
A call for aid was sent out to the Adeptus Administratum as the Planetary Governor (Meyloch Severus) was concerned of the Tau Empire are planning on attacking the Desert World of Dolumar IV. They sent in the 501st, the 182nd and the 111th Cordanian Regiments to aid in the coming war. But a warp storm has cut off the main route to the planet so they have to reroute their path. They came to the system a week late and the Tau have already made steady progress against Dolumar Planetary Defense Forces. So when they had analyzed the threat. They unload all of their transport ships across the battlefields while the Battlefleet was providing cover for them to the surface while they can hold of the Tau battlefleet and try to cut off their reinforcements. They successfully got all of their regimental troop carriers to the planet.

Their task now is to regain grounds and trench lines that were lost from the Tau forces. These tasks are given to the 501st and the 182nd, while the 111th is given the task of clearing out the civilian population out of the war zone while also providing aid to the surviving Dolumar Planetary Defense Forces. They were making great progress against the Tau forces until a high order was given by Captain Ardias of the 3rd Company of the Ultramarines.

That all Imperial Force now must stand down. This did not sit well with most of the Imperial Guard personnel, but they have followed their orders. But the Imperial forces were then betrayed by the Planetary Governor Meyloch Severus. To compound matters, a large Chaos Warband of the vile Word Bearers Traitor Legion made a massive surprise attack on the planet. So they begin an evacuation of the remaining civilian population, they also greatly made sure that they don't have any knowledge of Chaos. They use their own psykers to mind cleanse them of the knowledge of Chaos.