Shield of Humanity

From publisher's description: Shield of Humanity, is an Only War supplement for new recruits and veteran guardsmen alike. It is time to stand in service to the Emperor in the Spinward Front. The Imperial Guard stands as humanity’s shield from the myriad threats to the Imperium. With new rules for auxiliary regiments, advanced specialities, and rules for characters with religious backgrounds, Shield of Humanity is a must for any Only War player.