- Builder Unit. - Constructs all Space Marine buildings. - Effective against Infantry. - Detects infiltrated units. - Commander Unit. - In addition to being battle-brothers to their fellow Space Marines, Techmarines (Frater Astrotechnicus) also serve as mechanics and technicians to their respective Chapters, similar to the Enginseers who serve in the Imperial Guard. Techmarines pledge allegiance to both the Cult Mechanicus and their Chapter, which makes them something of an oddity among their battle-brothers. A Techmarine's Power Armour is modified to accommodate his cybernetic enhancements and his armour's backpack is also upgraded with several servo-arms and mechadendrites. - Master of the sacred technology that fuels the Emperor's war machine, the Techmarine maintains and repairs all of his Brothers' armament, structures and vehicles. - Can be upgraded to be effective against heavy infantry, vehicles and buildings.