Ryza Escalation

The Ryza Escalation is the name of the second Imperial defensive campaign carried out by the Rassian Iron Corps Astra Militarum Regiments to help defend the Imperial worlds of the vitally important Ryza System from a continuous build-up of encroaching Ork forces.

Background
A second, even larger Ork invasion smashes into the western sector of Segmentum Ultima. The resurgent WAAAGH! Grax is denied from taking key Forge Worlds by the staunch efforts of Imperial Guard regiments from more than twenty worlds, including Rassia.