The Civilised World of Pyran has a stringent and divisive caste-based society, developed and refined over millennia after the initial Imperial colonisation of the planet in the 34th Millennium. At the very apex of this elitist world is the ruling Imperial Governor, chosen directly by the Adeptus Terra from one of the leaders of the Imperial Greater Noble Houses. The people of Pyran are intrinsically bound by their traditions in a way few off-worlders comprehend and the social and political standing of any one of the noble houses rests almost solely on the social graces of its members, as well as their military achievements within the Dragoons.