The Astra Militarum, also known as the Imperial Guard, is the primary military force of the Imperium of Man in the Warhammer 40,000 universe. Composed of countless regiments from various planets, they rely on sheer numbers, discipline, and heavy firepower to combat threats. Their soldiers are often ordinary humans, equipped with standard-issue weapons and armor, but they are supported by advanced technology and powerful vehicles. The Astra Militarum is known for its iconic tanks, such as the Leman Russ, and artillery units that provide devastating fire support. They often fight alongside other factions, including the Adepta Sororitas and the Adeptus Mechanicus, to defend humanity against alien races and supernatural horrors.