The machine-cults of the Imperium of man praise the omnissiah and the machine spirit, worshipping human constructs as miracles. They maintain and build the weapons, vehicles, and other equipment of the imperium. However, they also maintain their own military, to defend their forge worlds, and their interests from both invaders, and sometimes the rest of the imperium. The rangers of the Adeptus Mechanicus serve as their frontline soldiers, modified with huge numbers of mechanical additions to increase their combat potential.

btw I just made this for fun since I was bored, so its really not perfect...