Grey Knights - Chapter Ranks: Unlike almost all other Space Marine Chapters, the Grey Knights do not follow the tenets of the Codex Astartes in the matter of force organisation. The Grey Knights' Chapter hierarchy, like that of the Space Wolves and Black Templars, is drastically different from that of other Codex-compliant Space Marine Chapters.Due to the unique manner in which the Grey Knights are recruited and trained, each warrior progresses through a series of preordained ranks and will operate in a particular squad led by an individual of higher rank rather than being assigned to a particular Battle Company. As such, the leader of each Grey Knights squad is obeyed immediately and without question by those under his command.The biggest difference is that the Grey Knights do not technically have an acknowledged Chapter Master, being officially governed collectively instead by the Chapter Council.Though there are specialist ranks and positions within the Grey Knights that are very similar to those of Codex-compliant Chapters, there exist several unique specialist positions that are found only within the ranks of the Grey Knights.Grey Knights Supreme Grand Master - This is the highest rank that it is possible for a Grey Knight to attain within the Chapter. This venerable rank is equivalent to a Chapter Master of other Space Marine Chapters. Also referred to as the Chapter Lord, the Supreme Grand Master has complete authority over the rest of the Chapter. However, a Grey Knight can only be appointed as the Supreme Grand Master with the unanimous consent of every other Grand Master on the Chapter Council, thus ensuring that an unsuitable candidate does not attain dominion over the Chapter.Grey Knights Grand Master - The second highest rank attainable by a Grey Knight, a Grand Master is -- by virtue of his esteemed rank -- a member of the Inner Conclave of the Inquisition and the Chapter Council that governs the Grey Knights. By ancient tradition, there are eight Grand Masters of the Chapter. Each is the spiritual heir of one of the eight Founding Astartes of the Chapter during the Horus Heresy who are now recognised in Chapter tradition as the first Grand Masters, "the Titans." A master Daemonslayer, a Grand Master always wears Terminator Armour and wields a Nemesis Force Weapon in combat, and is also a powerful psyker. Few, if any, Daemons have been able to stand against a Grand Master of the Grey Knights and survive. The death of such a powerful defender of the Emperor's will is always mourned by the Grey Knights and the Ordo Malleus -- though no common citizen of the Imperium will ever know of him. Due to the amount of experience, and enemy kills, needed to become such a warrior, Grand Masters are typically ancient, millennia old, Space Marines.Grey Knights Captain - A Grey Knights brother-captain is a senior officer of the Grey Knights. They stand amongst the Chapter's foremost warriors, and are second only in rank and battle-prowess to the Chapter's Grand Masters. They have direct command and authority over one of the Chapter's brotherhoods, making them equivalent to a standard Space Marine Captain of Codex Astartes-compliant Chapters. In matters of strategy and planning, these brother-captains answer to no-one, not even to the Grand Masters themselves. The heavy burden of command over a Grey Knights brotherhood is one of control of nearly unmatched power. A captain of the Grey Knights is above such things as corruption by the power that they command in battle, for their souls are hardened against the promises and blandishments proffered by the Daemons of Chaos.Grey Knights Terminator - A Grey Knight Terminator is a superlative warrior whose status as an elite amongst the elite forms the heart of the Grey Knights' fighting forces. These warriors pursue the endless war against the Daemons of Chaos, armoured in superior suits of Tactical Dreadnought Armour, facing the vile horrors of the Warp, always outnumbered by the baying foe. In addition to possessing more powerful armour, they also use their psychic powers actively as opposed to passively in combat. They wield the special weapons only found within the Armouries of the Grey Knights -- Incinerators and Psycannons (although they use wrist-mounted variants rather than the standard two-handed version) -- as their standard power armour-wearing battle-brothers. A Terminator's primary armament is a Nemesis Force Weapon of some kind, selected from the Chapter's Armoury according to the skills and preferences of its wielder. As there is no doctrinal restriction on the types and numbers of weapons carried, it is rare for two Terminator Squads to bear exactly the same weapons combination. Some prefer the crushing force of a Nemesis Daemonhammer, others the flurry of attacks granted by a matched pair of Nemesis Falchions.Grey Knights Justicar - Justicars are the officers who lead the latest recruits to the Grey Knights -- although it should be noted that such recruits may already have been fighting the Emperor's foes for up to a standard century. Holding this command is the first step on the path for a Grey Knight to become a Grand Master of the Chapter. Justicars also lead Grey Knight Terminator Squads, although such officers are usually referred to as a "brother-captain" rather than Justicar. Justicars are the equivalent of a standard sergeant of Codex Astartes-compliant Chapters.Grey Knights Battle-Brother - The standard Grey Knight. Equipped with the famed suit of Aegis Armour, the standard armament of a Grey Knight also includes a wrist-mounted Storm Bolter of perfect craftsmanship and a Nemesis Force Weapon. Each weapon is unique to its owner, having been attuned to his particular psychic signal. They take the form of a traditional melee weapon, such as a halberd, sword, axe, hammer, mace, maul, scythe or even a morning star. Newly accepted battle-brothers will be inducted into fresh squads led by a Justicar, eventually developing their abilities in leadership, weaponry, psychic ability and armed/unarmed combat. Upon demonstration of above average ability in one of these areas they take their place in either the Strike Squads, Interceptor Squads, Purgation Squads or become Justicars themselves to lead new batches of recruits.