When the Primarch of the X Legion was discovered during the early years of the Great Crusade, he was among the first of the Emperor's lost sons to be found, and, like Horus Lupercal and Leman Russ before him, had risen to become a warlord in his own right on the world on which he had been cast. So it was that Ferrus Manus' transition from planetary warlord to general of the Great Crusade was a swift one, aided by his evident hunger for the task set before him and the uncompromising intelligence and diligent application to this greater challenge he displayed. In a scant few years, Ferrus Manus was transferred full control of the X Legion which he took command of body and soul, renaming it and remaking it in his image.