Moirae Schism - The Sons of Medusa: The Moirae doctrines were quickly embraced by a significant percentage of those within the Iron Hands Chapter, and championed by the infamous Omnissian mystic, Iron Father Setol Sollex among their clan companies.Discord soon followed, and the Iron Hands rapidly approached the edge of an outright Chapter civil war. Clan Raukaan was notable during this time of conflict for holding staunchly to their Chapter's core beliefs. Under the influence of Iron Chaplain Furnous and Iron Captain Hekkan, they were one of the only clan companies to not have a single Battle-Brother become corrupted by the pernicious Moirae doctrine.Indeed, they deployed several squadrons of Vindicators and Predators against rebellious Cataphractii forces during the Battle of Kamjada. That these Adeptus Mechanicus rebels were supported by a small cadre of warriors from the Iron Hands' Clan Borrgos would form a point of bitter contention between the two clan companies for many centuries to come.Open civil war was only averted by the Iron Hands Great Clan Council's imposition of a settlement. Notoriously straightforward and harsh, their solution to avoid mass bloodshed within the ranks was a simple one -- exile for the minority who had embraced the dissident doctrine, and a binding treaty never to raise their hands against their former brothers enacted by both sides.It is believed that fully a third of the Iron Hands brethren then departed, to be joined in time by a handful of other Space Marines from other Iron Hands Successor Chapters who shared their beliefs (although evidence exists that some like the Red Talons mercilessly destroyed their errant brothers over this matter, rather than suffer the dissidents to live).This exiled faction still saw themselves as part of the Imperium and still members of the Iron Hands. Although reduced to a ragtag fleet, they swiftly set about locating and destroying enemy targets. Over time they slowly began to increase their numbers and strength, tithing their gene-seed to higher Imperial authorities and conducting their duty as if they were still part of their mother Chapter.Over time, the exiled faction continued to use the iconography and pattern of the Iron Hands from which they had been outcast, with some minor variations. They further divided themselves into three new clan companies to support their steady increase in numbers, and eventually outlived the schism that had given them birth.So matters continued until the dawning of the Age of Redemption. During this period the newly resurgent High Lords of Terra reassembled the disparate strands of anarchy and purged what could not be saved from the Imperium. The Moirae exiles of the Iron Hands, now a separate Chapter in all but name, were weighed and judged, their record examined in minute detail as was their gene-seed for unworthiness or deviance. They were found to be loyal and untainted.As a result, by an almost unique edict, the newly renamed Sons of Medusa were reorganised and ratified as an official Chapter of the Adeptus Astartes within the Emperor's grace, despite protests by some within the Adeptus Mechanicus and the grave misgivings held by numerous other Space Marine Chapters.Although the Sons of Medusa were born as a result of the Moirae Schism, it is unknown just how much of its teachings they still cleave to more than five millennia later. What is certain is that many factions of the Adeptus Mechanicus still view them with suspicion. Even their forebears, the Iron Hands, still treat them with cold civility at best.The Sons of Medusa currently maintain good relations with certain Explorator sects and have been tireless in their defence of the Imperium, which has won them praise and honour on many battlefields.In the late 39th Millennium, the Sons of Medusa established a series of fortified void stations on asteroids in the abandoned mining system of Taelus to serve as a more permanent facility for their fleet-based Chapter, constructing secure armouries, gene-seed banks and forges deep within the ferrous asteroid masses. The Taelus System is but a single solar day under Warp from what is now the Dead World of Moirae.