With the Emperor interred in the wondrous life-sustaining machineries of the Golden Throne, "His attentions turned towards the defence of humanity’s very soul, others must rule the Imperium in His name". It falls to the Senatorum Imperialis—the High Lords of Terra—to conduct the essential business of governing the galaxy-wide Domains of the Emperor. It is by the order of the High Lords that the mighty armies and fleets of the Imperium are raised, mustered, and sent to war, and theirs is the task of conquering the galaxy according to the manifest destiny of Mankind. By the word of the High Lords, worlds burn and xenos species are exterminated. When the situation demands it, the High Lords appoint the mightiest of leaders to command vast armies to conduct crusades against the enemies of the Imperium, conferring the auspicious, and not always welcome, title of Warmaster upon men whose name will be etched in history for all time.