The Astra Militarum, formerly known as the Imperial Guard, is the largest military force of the Imperium of Man in Warhammer 40,000. Composed of countless regiments from countless worlds, they are ordinary humans trained and equipped to fight in the galaxy-spanning conflicts of the 41st millennium. Known for their resilience, numbers, and overwhelming firepower, the Astra Militarum uses a variety of tanks, artillery, and infantry to defend humanity and enforce the will of the Emperor across the stars.