The Iron Father is considered the representative to the Chapter of both the Emperor of Mankind and the Adeptus Mechanicus' Cult Mechanicus. Unlike the Chaplains of other Chapters, however, the Iron Fathers do not receive a Rosarius from the Ecclesiarchy because of the perceived heresy of the Iron Hands' belief in the doctrines of the Omnissiah rather than the standard Imperial Creed. The Iron Fathers are schooled in the mysteries of the Machine Cult to a far greater degree than the Techmarines of most other Chapters. Like all Techmarines, they undergo a portion of their instruction under the supervision of the Tech-priests of the Cult Mechanicus. Yet, while most Techmarines maintain a mutually reserved distance from the Cult of Mars, the Iron Fathers appear to have far closer links, and ar