Adeptus Mechanicus - Pre-Heresy Mechanicum Forge World Hierarchy: The following is an exemplary illustration of the military-feudal organisational structure depicted in the abstract of a trans-Martian Forge World, as rendered by the Office of the Principia Militaris of the Great Crusade early in the first decade of the 31st Millennium.Archmagos Intendant (Planetary Governor) - An Archmagos Intendant was given equal rank to an Imperial Commander and Planetary Governor, with full executive, temporal and spiritual power over their domains, with notional fealty only to Mars and the Emperor. Note that various alternative nomenclatures for this title are used on different Forge Worlds (e.g., Hierophant Technis (Ryza), Gnostarch (Antioch Majoris), Fabricator Potentate (Tigrus), Vox-Omnis (Incaladion), Revered-Comptroller (Phaeton Prime).The Holy Synod of the Lord Magos (Ruling Feudal-Clerical Oligarchy of the Forge World) - Each member of the synod is a magnate and sub-ruler of their own domain or forge-fane, as well as a high-ranking priest of the Cult Mechanicus, tied to the larger web of the Forge World through a complex network of alliances, preference, arcane technological specialty and religious rank.Notional Synod seniority by title in order of power:The Archmandriture (Chamber Cardinal)The ArchmagosThe Magos MajorisThe Magos OrdinaryNotable Divisions of Techno-Arcana among the Synod commonly included:HespherstariProvenderExploratorGenetorLogisVulpaxisMetallurgicusLictanexDominusCordantorMhalagraAlchemysMyrmidexLachrimallusThe Taghmata Omnissiah - The Taghmata Omnissiah was a military command protocol enacted in times of war or to create a detached military formation varying in size from sub-division to macro battle group, constructed by predetermined configurations of retainer troops, Tech-priests, war engines and support systems, placed under the command of a number of Magi of the Synod and commanded by Magi/Archmagi designated "Prime".The Legio Cybernetica  - Sacred orders of Tech-priests devolved into cohorts charged with the construction and use of Battle-automata, existing both as fully independent structures and sub-factions owing either pacts of mutual support or alliance with the Synods of major Forge Worlds.The Magos Militant/Secutarius - Lower ranked Magi as well as assigned Tech-priests and prelates of militant sub-cults of the Mechanicum utilised by the Taghmata as a field command and control cadre. Each will commonly possess their own acolytes, retainer forces and sub-units owing them direct fealty.Principal Tactical Divisions of the TaghmataAssociated Orders & Sub-Cults Militant - Composition will vary greatly depending on the Taghmata disposition, role and the tendencies and alliances of the governing Forge World Myrmidon Cult, etc:LacyraemaraIndentured Labour UnitsAdseculatis Modified TroopsBio-Alchem CadresTech-priest Lacyraemarta CovenantsCyber-Hybrid CarnivoraMunitoria Logis - Provender of Munitions and Wargear, Servitor and Drone Cohorts. Assigned to Taghmata service.Signatus AvoxLexmachanicus AuditoriiMacrotechniaEnginseer CovenantsTech-thrall Combat UnitsMacro-MachinaOrdinatus LocumTechnographica DeterminusBonded CyberneticaBattle-AutomataSiege-AutomataBonded Tech-priest CovenantsThe AutokratorGround ArmourPioneer ForcesMobile Artillery UnitsTech-Guard RegimentsThe Knight Houses of the Questoris Familia - The ruling noble houses of the Knight Worlds form their own unique culture and traditions from their own unique culture and traditions which have become closely linked with the Mechanicum over time. Households often deploy alongside the Legio Titanicus in support.The Basilikon Astra - The division of the Machine God's servants tasked with the construction, use and operation of void craft and interstellar vessels. This order's divisions by their nature control the outer reaches of a Forge World's systems and so stand apart from the planetary synods, but are still tied to them by dependence and ancient tradition.The Skitarius (Tech-Guard) - Ancient standing armies of elite cybernetically and genetically engineered troops, originating on Mars and principally loyal to the office of the Fabricator-General. The Skitarii, also known as the Mechanicum Protectors, are not members of the priesthood, but follow their own unique martial traditions and sub-cult of the Omnissiah. Skitarii regiments maintain entirely separate structures of organisation and tactical deployment outside of the Taghmata and are assigned at the behest of the Lords of Mars.The Prefecture Magisterium - Doctrinal covenant of the Machine Cult charged with preserving dogma and the persecution of techno-heresy. Magisterium Cohorts and hunter-killer claves are maintained on all Forge Worlds under the authority of the Archmagos Intendant.The Legio Titanicus - The division of the Titan Legions, the Princeps and Moderatii of the Legio Titanicus are charged with the baleful right and onerous duty of mastering and maintaining the God-Machines that are the avatars of the Omnissiah's destructive wrath. The manifold Titan Legions are spread through the Omnissiah's domains as their shield and their strength, as well as operating as the hammer of the Great Crusade. The Legio Titanicus form an ancient military society existing in parallel with the Mechanicum priesthood, including their own support structure, domains and military retainers (Scutarii).The Ordo Reductor  - Mendicant order of Tech-priests devoted to the art of siege craft, demolition and mass destruction. The Ordo Reductor is essentially nomadic, gravitating to areas of intense warfare, but maintains links to major Forge Worlds for resupply and support.