WAAAGH! Grax

'''WAAAGH! Grax''' was the name of the Imperial defensive campaign conducted by the Rassian Iron Corps Astra Militarum Regiments against a massive Ork invasion carried out by the forces of WAAAGH! Grax against the vitally important Ryza System, home to the major forge world of Ryza.

Background
Orks in their billions descend upon the Ryza System. The expanding warzone, centred around the Forge World of Ryza, becomes a meat grinder as planet after planet is swallowed by the bloody conflict. The Rassian 813th Army Group deploys to the world of Romia to blunt a spearhead of Orks. Although the Orks deploy Gargants and Stompas by the dozen, the support of Legio Vulpes, combined with the master tank companies of Rassia, are successful in decimating the Orks' super-heavy war engines.