Never one to take the full burden of command, can Castellan-Colonel Roane lead a ragtag group of soldiers through the fires of a civil war? Hard choices await him as he tries to forge his unit into shape.

A young and brash Cadian, Castellan-Colonel Orysian Roane was always content to leave the true burdens of leadership to others – that is, until his chain of command was suddenly shattered. Now, he is forced to take charge of a ragtag auxilia built around a clan of despised abhumans. A clash of different cultures and tactical doctrines, the regiment is filled with failures, survivors and veterans from every corner of the Imperium. Overseen and openly loathed by a murderous commissar and consistently ignored by the Departmento Munitorum, Roane struggles with the impossible task of hammering his unit into Cadian shape, while those around him would rather see it destroyed. But before Roane can find his footing, a broken world is plunged into civil war, and the auxilia faces a trial by fire. Will this be both his first and last command?