Ordo Reductor

The Ordo Reductor is a specialized military division of the Adeptus Mechanicus that makes use of the forbidden weapons of a bygone age, engaging primarily in siege warfare. Known to their fellow adherents in the Machine Cult as the "Bringers of Blessed Ruin", the Ordo Reductor's sacred role is that of the un-maker, slaughterer and breaker; they embody the animus of the Omnissiah, its duality not as a creator or embodiment of knowledge, but as destroyer and bringer of oblivion. The Ordo Reductor was particularly active during the Great Crusade and the Horus Heresy and deployed the potent cybernetic shock-troops of the Mechanicum known as the Thallax. They have a different interpretation of the Cult Mechanicus than their peers among the Tech-priests, seeing the Machine God and the Omnissiah as the divine embodiments of destruction itself, naming Him the Unmaker God.