The Astra Militarum stands as a redoubtable bulwark in the face of endless attacks on the Imperium from xenos empires and warp-born horrors alike. From Cadia to Catachan, Krieg, Mordian, and Armageddon, the Emperor's will wields the Imperial Guard in the defence of Humanity. This story is part of a series of 5 digital short stories celebrating everything Astra Militarum – the perfect run-up to the launch of a host of new Astra Militarum miniatures for Warhammer 40,000. 

The Astra Militarum has been infiltrated by an insidious foe – but how far has the corruption spread?

A squad of Sentinels crosses a desert on a covert mission against the Genestealer Cults. But is there a traitor in their midst?

Written by Victoria Hayward.