Astra Militarum

It is comprised of countless billions of men and women -- hundreds of thousands of different regiments, supported by a vast array of light and heavy armoured vehicles that provide the Imperial Guard's primary offensive punch. The Astra Militarum is usually the first Imperial force to respond to a threat if a world's Planetary Defence Force (PDF) fails to suppress it. They also garrison major locations of strategic or cultural interest to the Imperium and are often found in defensive roles. Supported by legions of heavy armour and thundering artillery, the Imperial Guard fight a never-ending war for the survival of Mankind in an unrelentingly hostile universe. The primary combat tactic of the Astra Militarum is to overwhelm the enemy with their endless numbers, while at the same time hammer them into submission with devastating artillery and crush them with powerful main battle tanks. As a result, the Astra Militarum is often referred to as the "Hammer of the Emperor" -- the sheer amount of force that the Imperial Guard can bring to bear on the enemy is devastating, but is not as direct or as precise as their Space Marine allies in the Adeptus Astartes, who are described as the "Scalpel of the Emperor" and specialise in planetary assaults, special operations and decapitation strikes. There is no universal uniform or regimental command hierarchy in the Astra Militarum, although it is compulsory for every regiment to have at least one commissar to maintain the discipline and morale of the troops while watching for any signs of corruption or heretical taint in the ranks. However, it is worth noting that a number of worlds copy the uniform and equipment used by the regiments of the Cadian Shock Troops, who are viewed as being the most effective of the Astra Militarum's infantry units.