Adeptus Arbites
The Adeptus Arbites is the adepta of the Adeptus Terra that serves as the galactic police force of the Imperium of Man, responsible for enforcing Imperial Law (the Lex Imperialis) on all Imperial-controlled worlds. The Adeptus Arbites have been granted the right by the High Lords of Terra to serve as judge, jury and executioner for any Imperial citizen they discover having broken Imperial law. Unfortunately for many Imperial citizens, the concept of due process is not one that generally applies in the Imperium.
