+++Grey Knights+++

"The Grey Knights are unique among the Legiones Astartes as the only chapter to have full knowledge of the dark secrets of Chaos – they alone know of the existence of Daemons and their appearance in the real world, and they alone are equipped to battle and defeat mankind’s most terrible enemy." While the Grey Knights are technically Adeptus Astartes, they do not involve themselves with the ordinary activities of Space Marines. They are instead, a part of the Inquisition. And act as the military arm of the Ordo Malleus, with their main base being located on Saturn's moon Titan. The Grey Knights are unique in that they have no antecedants. The Chapters Gene-seed was designed from an unknown source by the Adeptus Mechanicus. The high ratio of psykers in the chapter points to a source outside of the normal processes of existing Space Marine Chapters. There are conflicting reports of when this chapter was founded. I believe that the account of their being the first chapter created after the Heresy, to be the most likely. However it is also rumored that they were created upon the direct orders of the Emperor during the Great Crusade. The marines are subjected to training far more difficult than that of normal Chapters. "To date these extraordinary measures have been effective: in 10,000 years of combat against the forces of darkness not one Grey Knight has failed in battle or betrayed the Emperor in word or deed."

The Grey Knights' color scheme for Powered Armor is a grey similar to that of the Space Sharks. However, their more well known units, Terminators, wear metallic armor. The most common colors are gold, brass, and steel. Each Grey Knight Terminator goes into battle carrying his personally hand crafted copy of the 'Liber Daemonicus', the Chapters sacred book of battle rituals. It can often be seen displayed in its ornately decorated ceremite case, hanging from a chain or fastened to his breast-plate.

"Nemesis Force weapons are the standard class of armament use by Grey Knight Terminators. The Nemesis is a double-handed weapon and comes in several forms, often as a halberd or a two-handed sword.

Whatever their shape, all Nemesis weapons have the same basic design and function: the blade is a powerful force weapon housing a psi-matrix attuned to the unique psychic field of it’s owner; and the haft or handle contains a modified storm bolter which can be used in both ranged combat and close assault."

The Grey Knights secret fortress-monastery is located on Saturn's largest moon, Titan. The fortess is also the home to a unique library of knowledge known to a select few as the 'Librarium Daemonica'. It contains information about the Warp and the forces of Chaos, "tens of thousands of tomes of arcane lore and diabolism," accumulated over the millennia by the Ordo Malleus.

Most of the Chapter is scattered throughout the Imperium, usually organised into small units that have "trained and fought together for their entire lives." When reports of possible Demonic incursion are received, they are able to respond immediately and investigate. It is not unusual for Grey Knights to be out in the farthest reaches of the Imperium for several decades at a time. When they die, a Grey knights only request is to have their remains returned to Titan. Where "they can rest at last from their constant vigilance in the hallowed crypts far beneath the monastery amongst some of the Imperium's greatest and most unsung heroes."