Horus Heresy - Mechanicum

An Archmagos Prime is a commander of the Taghmata Omnissiah – a high adept of the Machine Cult, chosen from amongst their peers to lead in battle, armed and girded for war with the finest armaments and defences their arcane arts can provide.

The Thallax are hulking, heavily augmented cyborg shock troops originating within the Ordo Reductor faction of the Mechanicum.

The Triaros is the primary armoured battlefield transport of the Mechanicum Taghmata in the Age of Darkness, relying on unique technologies held as arcana by the magos autokrator and never divulged for wider Imperial use, even by the Legiones Astartes.

The Thanatar Siege-automata is a mobile artillery platform rather than a general battle unit, with a heavy frame built to accommodate its huge weaponry and requisite power systems.

Tech-thralls are a source of expendable labour on many forge worlds, typically created from those poor souls who transgress against their Tech-Priest masters.

The Castellax Battle-automata are general purpose combat robots, developed from older designs during the Great Crusade.

Having declared its secession from Imperial rule at the very dawn of the Horus Heresy, Mars sat like a viper upon the doorstep of the Loyalist Throneworld.

The mysterious Mechanicum of the 31st Millennium marched to war armed with esoteric and arcane science.