Ordo Malleus

In the fictional Warhammer 40,000 universe, the Daemonhunters (formally known as the Ordo Malleus) are one of the three Ordos of the Holy Emperor's Inquisition. Aided by the Grey Knights Space Marine Chapter, it is the task of the Ordo Malleus to destroy the physical manifestation of Chaos.

Foundation and Role
The Ordo Malleus was founded shortly after the Horus Heresy, and was one of the two original Ordos of the Inquisition. The Ordo Malleus concerns itself with the daemonic threat that faces the Imperium, and for thousands of years have waged a covert war for humanity's survival. Every single Inquisitor has sworn to pledge their every hour to seeking out and destroying daemonic threats wherever they may appear.

An Inquisitor of the Ordo Malleus has at his disposal all the Imperium may offer. He will not hesitate to recruit local troops at a moment's notice, or to call upon a detachment from the Space Marines. No force is considered too strong to combat such a threat, and to prevent the further spread of Chaos, all records of their actions are eliminated. Those with skills too useful to waste are mind-scrubbed and brainwashed to forget, while any other forces are consigned to labour camps or executed.

When the level of Daemonic infestation is so much that even an Inquisitor can not handle it, the Ordo Malleus calls the elite Grey Knights Space Marines. Surpassing even their fellow Marines in power, the Grey Knights have the skill and determination to destroy any daemon and send its presence back into the Immaterium.

Without the Ordo Malleus and the Grey Knights, the Imperium would not survive.