As the origin point of the priesthood and the location of humanity's rediscovery of technology during the Age of Strife, Mars holds a status no other world can rival. It is the Sacred Planet, the throne of the Machine God on the physical plane, and the pilgrimage destination of countless Tech-Priests seeking to walk the ground where the Cult Mechanicus first drew breath.
The planet's governance is inseparable from that of the whole Adeptus Mechanicus. Its ruler, the Fabricator-General, commands not only Mars but the loyalty of forge worlds across the galaxy, and sits among the High Lords of Terra as one of the most influential figures in the Imperium. Beneath the surface lie labyrinthine vaults and archives said to contain wonders and horrors sealed away since before the Emperor's ascension.
Martian forces are traditionalist and exacting, favouring proven patterns over experimentation and wielding technologies of superb quality. Their war doctrine emphasizes overwhelming firepower and the deployment of ancient war engines maintained with obsessive care. To bear the heraldry of Mars is to carry the weight of the oldest and holiest lineage in the Cult Mechanicus.
Adeptus Mechanicus
Order of battle
The Forge World Mars field the units of the Adeptus Mechanicus — a detachment from the roster:
Kindred formations
Other Adeptus Mechanicus formations
Forge World AgripinaaAgripinaa, the Orb of a Million Scars, is a grim and war-battered forge world set perilously close to the Eye of Terror. For ten thousand years it has laboured to arm the Imperial bastions of the Cadian Gate, its manufactories choking out ammunition, autoguns and battle tanks without pause. Bloodied again and again by the Black Crusades of Abaddon the Despoiler, Agripinaa is a fortress-foundry that forges in one hand and wars with the other, its survival bought in blood and rust.
Forge World GraiaGraia is a forge world renowned for its unbreakable resilience and its fanatical devotion to the war effort of the Imperium. Its Tech-Priests are famed for their stubborn refusal to yield ground, augmenting their forces with redundant systems and unshakeable programming so that even grievous damage cannot halt their advance. Graia's legions fight on where others would break, their machine spirits and cyborg soldiers driven by an almost supernatural will to endure.
Forge World LuciusLucius, called the Hollow Forge, is among the strangest and most secretive of all forge worlds, a planet turned inside out around a captive star. Its Tech-Priests have achieved a command of teleportation matched nowhere else in the Machine Cult, translating warriors and even god-machines through the immaterium and onto the battlefield in the space of a heartbeat. From this cavernous world stride the Titans of the Legio Astorum, and its forge-guilds hoard techno-arcana the wider priesthood can scarcely comprehend.
Forge World MetalicaMetalica is a forge world so utterly given over to industry that scarcely a scrap of natural land remains upon its surface. It is a planet of ceaseless machinery, its skies black with pollution and its ground a single unbroken sprawl of foundries and hab-stacks. The Tech-Priests of Metalica are famed for their vast, disciplined Skitarii legions and their belief in the supremacy of the machine over the frailty of flesh, marching to war in overwhelming, relentless numbers.
Forge World RyzaRyza is the great plasma-forge of the Adeptus Mechanicus, a world whose mastery of contained starfire is said to be rivalled only by Mars itself. Its priesthood venerates plasma as the very lifeblood of the Omnissiah, and from its armour-cradles come the finest energy weapons and reactor cores in the Imperium. Home to the Legio Crucius, the Warmongers, Ryza has endured heresy and endless greenskin invasion alike, its fires never once permitted to gutter and die.
Forge World Stygies VIIIStygies VIII is a forge world with a shadowed and controversial reputation, its Tech-Priests long suspected of dabbling in forbidden and xenos-derived technologies in their pursuit of knowledge. Masters of stealth and misdirection, the magi of Stygies favour cloaking systems, ambush tactics, and the study of alien war machines. Whether radical heretics or merely bold researchers pushing the boundaries of orthodoxy, the priesthood of Stygies walks a razor's edge between innovation and damnation.