Tactical Squad Xorios is a veteran squad that fought some of the most brutal battles of the Crusade. Sons of Baal all, they were in the first wave of recruits from the Primarch's homeworld. Down to half-strength after Signus Prime, they are more bitter and driven than ever.

Xorios now fights at the vanguard of the Defense of Terra, alongside their Legion brothers and cousins from the Imperial Fists and the White Scars. They are expected to get some reinforcements soon but with the traitors at the gates, soon may not be soon enough.