Church Militant: The eikones revered by the Church of the Flame include two war gods, arguably so described: Dúréníän, eikone of righteous war, battle, conquest, strategy and tactics, and patron of the sentinels; and Kalasané, eikone of battle, courage, valor, victory through strength, and personal combat.  Their combined religious order, logically enough, is made up entirely of heavily armed and appropriately deadly templars – and when I say appropriately deadly, I do mean that in the modern age, they’re stomping around in much the same power armor as the actual Imperial Military Service uses.  (No bludgeoning weapons here out of a “commitment to peace”; they are very clear about Coming In War, and Gods Being On The Side Of The Big Weapons.  Also, not terribly keen on converting by the sword – they’re religiously militant, not militantly religious, if you see what I mean.)

They also supply all the military chaplains, which in the Imperial Legions is not a noncombatant position.  If anything, it’s a more combatant position than “legionary”… if one considers enthusiasm anything to go by.