The Red Waaagh seems unstoppable: Grukk Face-Rippa and his orks rampage through the Sanctus Reach system and planet after planet fall to the greenskins. Billions die, and there doesn't seem to be an end to the xenos offensive.
It is on the planet of Alaric Prime that Castellan Jakren Stein mounts his last stand. This proud son of Cadia knows that there will be no retreat, no surrender. It will be victory or death.
The men and women he leads are exceptional individuals, forged in the flames of war and ready for the ultimate sacrifice. They are brave soldiers, utterly loyal and fierce, and will obey any order without hesitation. They know that it's only their bravery and valour that protect the light from the darkness. They are the first, last and often only line of defense of the Imperium. They are the Astra Militarum!