Converted from DoW: SS, Ultimate Apocalypse mod.
Techmarines are battle-brothers of Space Marines chapters providing tehcnical support. They study holy rites of machine spirit awakening at Mars. To honor it, they paint their armor red and only certain parts are left with their chapters' colors.
Techmarines are often seen on battlefield, reparing damaged vehicles or bolstering defences of field fortifications.
Dawn of War Conversion