The Historical Revision Unit is another one of the myriad bureaucratic departments of the Administratum, whose Adepts are the indentured servants and Servitors known as Historitors who work within the Imperial Palace. Their job is to revise subversive records of Imperial history into versions that are more reverent towards the Emperor and the version of Imperial history that most glorifies His name. The Historicus is the title of the unit's chief Adept.