Two: the so-called Lesser Nobility, under the nominal leadership of the Charter-Duke of Ganges.
You cannot have 800 years of feudal structure and Imperial antecedence, after all, without also having 800 years of petty squabbles and aggrieved affluence. There were those on Kalkovac that wished the King gone for their own advantage, and now they came together in a sort of confederacy.
Irregular infantryman with the Eagon Monopoly during the divisive slab-clearing skirmishes in the outskirts of False Positive, 961. The ablative flak armor, pictured, is non-issue, privately sourced gear and almost certainly marks this soldier as a mercenary.