Cadia
Cadia is a world in the Warhammer 40k universe. It is situated in the galactic south of the Eye of Terror, in an area known as the Cadian Gate, the easiest route out of the Eye. Cadia is the only world that stops the advance of the forces of chaos, and is therefore the victim of many an attack from the Eye. Cadia has been turned into an army world, where the vast majority of citizens are trained for service in the Imperial Guard.