Legions Imperialis: Mechanicum Combat Force

Far more esoteric than the Space Marines, the forces of the Taghmata Omnissiah wage war under the command of the high-ranking Archmagos Primes and their Tech-Priest subordinates, who bring to field armies that use cyborgs, thralls, automata, and war machines to eliminate their adversaries. 

Two Archmagos Prime on Abeyant, two bases of Tech-Priests, two Myrmidon Secutor Hosts, four bases of Myrmidon Destructors, and 10 bases of Tech-thralls provide your core of cybernetic soldiers. They’re complemented by eight bases of Thallax Cohorts, four bases of Ursarax Cohorts, four bases of Castellax, four Thanatar with plasma mortars, four Thanatar with sollex heavy-las, two Domitar, two Arlatax, two Vultarax, and two Vorax. Two Triaros Armoured Conveyors ensure infantry survive the most dangerous of battlefields, and six Krios Battle Tanks make short work of enemy armour.