Mentors - Chapter Combat Doctrine: The Mentors Chapter is highly unusual amongst its fellow Space Marines and its modus operandi is quite different from that of the bulk of the Adeptus Astartes. The Mentors do not fight as a single force or even usually as full companies but instead second squads drawn from the Chapter's companies to supplement other Imperial military forces.This is because one of the unusual traits of Mentors Astartes, which may derive from an unforeseen mutation within their gene-seed, is that every Mentor possesses a near-genius ability to observe, memorise and adapt to any situation.This extraordinary capacity for learning is especially true in all matters military. The Chapter's main pursuit is therefore one of perfecting the fusion between the fruits of military science and the art of war. This extraordinary boon means that every Mentors Astartes is the equivalent of a professor of military science and military history with many standard years of combat experience.As a result, squads of Mentors Space Marines can serve as force multipliers when they are embedded in other Imperial military forces, such as with the regiments of the Astra Militarum or the starship squadrons of the Imperial Navy. Mentors Space Marines are thus deployed at the request of the various Imperial Segmentum Commands all across the galaxy wherever their particular talents would prove to be most useful.The basic rationale behind seconding Mentors Squads to other Imperial Adepta is that the Mentors are able to extract the maximum amount of information regarding the fighting prowess and techniques of just about any Imperial military force and thus how to improve their operational efficiency. When these squads return to their Chapter headquarters they bring with them an invaluable record which is without parallel in the galaxy.Other Space Marine Chapters and Astra Militarum regiments to whom these squads are sent benefit from having these superior warriors join them for a campaign or battle. An extra benefit to the Mentors of this operational structure is that they are able to claim and maintain an honourable record of real combat experience despite their focus on training and research and development. As a result of this uniquely varied combat record, the Mentors have added enough citations to their Roll of Honour to make far more venerable Chapters envious.The most experienced and skilled Mentors Astartes are Veterans who belong to a special unit somewhat similar to standard Chapters' elite 1st Companies that is known as the Elite Cadre. The Astartes of the Mentors' Elite Cadre are some of the most skilled warriors to have ever operated in the galaxy. Elite Cadre members expect to be deployed to deal with threats that lie outside the scope of a Space Marine Chapter's standard tactical doctrines.The Mentors are based in a highly-secret fortress-monastery complex that is located on a classified world. Most of the Chapter remains within this complex at any one time, constantly training and distilling down to its essence all of the military knowledge they have gained. Select squads are chosen to leave and carry out missions for the Emperor and the competition is intense within the Chapter to be chosen for these excursions.The Mentors Chapter enjoys close links with the Adeptus Mechanicus, and is known to be unusually technologically innovative in its own right. The Chapter also acts as a test bed for new Imperial technology recently developed by the Mechanicus. Consequently, the Mentors' equipment is of a superior standard in terms of reliability and technical complexity to that of the average Space Marine Chapter, if such a thing can be said to exist.