Taros Campaign - Other Forces: Of course, the Imperial Guard are not the only fighting forces in the Imperium. When the Adeptus Administratum committed itself to an invasion of Taros, it also sent requests throughout the other fighting arms of the Imperium. Whilst the Imperial Guard forces were the backbone of the mission, the Imperium has many other fighting forces that would be expected to do their duty.Firstly, the Adeptus Astartes. The Avenging Sons Chapter had already been engaged on Taros, but they were now rebuilding their strength after their heavy losses. They would have to wait to have their revenge on the Tau. The other Chapter to make forces available was the Raptors. A strike force of two companies and a Battle Barge from the Raptors Chapter would contribute significantly to the Imperium's combat power, both on the ground and with the fleet.High Magos Zadakine Volta had already promised the aid of a Titan Legion, but delivering on the oath would prove more difficult. Stygie VIII was the natural Forge World of choice to provide the aid of the Legio Honorum, but the legion was already fully committed. There were no battlegroups available to lend assistance. To fulfill his oath, Volta had the difficult task of finding replacements. In the end he turned to the rulers of Mars, traveling to the heart of the Cult of the Machine to personally request the aid of the Fabricator-General. He had only limited success. Many of the Titan battle-groups were already being committed to the Cadian Gate; the need for the Imperium's greatest fighting machines was pressing if the tide of Chaos was to be stemmed. Volta argued that he had sworn the aid of a Legion, and the Adeptus Mechanicus stood to gain much from the recapture of Taros. In the end, the intervention of the Fabricator-General secured Volta a small battlegroup from Legio Ignatum under the command of Princeps Jernay. The battle-group consisted of just four Warhound Titans, hardly the force he had hoped for, but enough to satisfy Volta's oath to Gustavus.The Departmento Munitorum, along with raising and transporting regiments, could also provide assistance in the form of indentured engineering and labor corps. They were not combat troops, but units for the rear area, to dig and build. It was valuable work that helped release Imperial Guard infantry from such arduous and time-consuming duties.The Adeptus Ministorum could also provide assistance, albeit not in the form of combat troops. Cardinal Astral Velas was not inclined to lend military aid to the Taros Invasion Force. He only attended the first High Command meeting in person, after which he left a representative to speak for him, one Deacon Gotz. The Cardinal made it clear he was not in favour of this expedition. To him, it was a waste of resources that could be put to better use fighting heresy elsewhere in his diocese. Taros was a dust-bowl planet of just twelve million souls, and there were still wars to be fought on Hive Worlds to save the souls of billions. The Cardinal felt it was only the malign influence of the Adeptus Mechanicus lobby that had forced the Adeptus Terra into sanctioning the attack, and he did not trust the Cult of the Machine and their mysterious ways. The Cardinal would supply no fighting forces, but would do the duty required of him. Ministorum Priests and Confessors would be found for each of the Imperial Guard regiments to guard the souls of the men of the Imperial Guard. The Orders Dialogous would supply useful support in the form of Tau language experts. The Orders Hospitaller would provide medical care to the injured. Ultimately, however, the contribution was minor. Politics within the upper ranks of the Ecclesiarchy probably had much to do with the Cardinal Astral's reticence. A powerful man in his own right, in shadowy corners it was spoken that Velas was not a supporter of the current Ecclesiarch. To be lending aid to the invasion might have been seen as responding to the Ecclesiarch's recent anti-alien sermons. The Cardinal liked to think of himself as his own man, with far greater concerns than twelve million wretched miners. He has also been seeking favour with those factions within the Ministorum that had their own plans for the succession to the Ecclesiarchal Throne on Terra.