Collegia Titanica - Organisation: The Collegia Titanica is organised into separate "divisiones" which each contains a number of Titan Legions (sometimes called "Titan Orders"). A Titan Legion is a group of Titans of different classes under the overall command of a "grand master," originating from a common Forge World or worlds.Each Legio is bound by a common heritage, tradition and school of thought, and each possesses a distinctive code of conduct and their own predilection in regard to particular battlefield operation and employed tactics. Each Titan Legion also has a preference for the use of certain weapons, different uniform designs, Titan decorations, rank names, colours, heraldry, and other peculiarities.All of this variety is within certain limits, as Titan Legions may not, for example, change the existing system of ranks and the Collegia Titanica's standard chain of command, though they still possess much liberty in their mode of operation -- similar, in ways, to the Chapters of the Adeptus Astartes.Some Titan Legions were created to fulfill specific battlefield roles, such as assaulting siege works or combat in special environmental conditions, and thus are geared appropriately, both in terms of wargear and mindset.The Collegia Titanica is the chief military arm of the Adeptus Mechanicus, and is beholden to that adepta's ruling Tech-priests. By virtue of the autonomy of the Mechanicus within the broader structure of the Imperium, the Titan Legions answer only to the Tech-priests' own hierarchy.Their deployments and assignments are exclusively decided by the Mechanicus' senior magi, and each has to be authorised by the ruling lords of a Titan Legion's home Forge World. This right provides the magi with great influence over when and where Imperial armies making use of Titan support will fight.On the battlefield, Titans may not be issued orders by other Imperial military commanders, be they Astra Militarum or Adeptus Astartes officers. A Titan battlegroup's actions will only be decided by their commanding princeps, a ranking magos of the Adeptus Mechanicus accompanying them, or in some situations by the lords of the Forge World the Titan Legion hails from.Although a high-ranking Tech-priest known as a magos technically holds authority over a Titan princeps, as they respect the princeps' tactical knowledge and experience, the latter would be given much freedom in their actions on the field. The magos, however, will interfere when they deem it necessary, for example ordering the battlegroup to withdraw from a world in order to avoid unnecessary Titan losses.There is one exception to the above -- a full member of the Inquisition has the power to commandeer Titans already on the field and directly issue them orders, as well as to requisition the deployment of a Titan battlegroup from a Forge World. However, a wise and politically astute Inquisitor will be careful when interfering in Mechanicus business, and even more so because the Priesthood of Mars is understandably fiercely protective of the Titans they regard as divine incarnations of the Machine God.The number of Titan Legions and individual Titans within the Collegia Titanica is unknown. Yet their ranks are presumed to be large. The Collegia Titanica has many deployments on its hands, protecting the Imperium not only from Traitors, but from xenos forces and other threats as well. Indeed, the Divisio Militaris deploys over a hundred Titan Legions to watch over the Eye of Terror alone, and the galaxy harbours many more dire threats to Humanity that require the attention of the Titan Legions.In addition to these duties, the Titan Legions also take on expeditions which lead them away from the boundaries of the Imperium -- bringing new worlds into the Imperial fold, aiding Rogue Traders and Adeptus Mechanicus Explorator fleets.The number of Titans in a single Legio varies greatly, as some possess as few as a dozen, and others maintain well over a hundred. Battle losses take solar decades or even Terran centuries to replace, as the construction of a new Titan is a long and extremely labourious process for the Adeptus Mechanicus.The Warlord-class is the most commonly found class of Battle Titan amongst the forces of the Imperium, while the Warhound is the smallest, utilised for scouting and flanking purposes. Between them stands the Reaver-class Battle Titan.The towering Emperor Battle Titans, the size of great Imperial cathedrals, are by far the most formidable types of Titans ever deployed by the Imperium, but an increasingly rare sight on the battlefields of the 41st Millennium. Titan Legions are deployed only in the most vital campaigns of the Imperium and on battlefields where the terrain and circumstances will allow them to unleash the full power of their colossal weaponry.