On every border and every battlefront, humanity's worst nightmares press ever inwards, and are held at bay only through vast and constant sacrifice. In these dark times, warfare on a galactic scale is a matter of soulless, grinding logistics. Only the Astra Militarum can marshal the manpower to fight such a war. The Imperial Guard fights punishing battles of attrition in which incalculable lives may be expended for each objective achieved. An Imperial Guard army must utilize the twin advantages of vast numbers and overwhelming firepower to annihilate its foes.