Black Library: Astra Militarum - Auxilia [Pre-order][Available 10/17/2026]

A new Astra Militarum novel by Russell Zimmerman. Young and brash Castellan-Colonel Roane is forced to take charge of a ragtag auxilia built around a clan of despised abhumans, overseen by a murderous commissar and ignored by the Departmento Munitorum. Roane struggles to hammer his unit into Cadian shape while those around him would rather see it destroyed.