Betalis III - The Coming of the Imperium: Betalis III was first discovered by the Imperium during the latter part of the Omniel Crusade, when the Crusade Fleet was returning victorious from the campaign against Renegade worlds in the Saint Altus Constellation. During a long-range scan of the Betalis System, an Adeptus Mechanicus Explorator team sent from the Crusade vessel Divine Unification discovered an ancient alien spacecraft buried in the ice of the frigid third planet circling the twin suns of Betalis. Until xeno-survey teams could arrive on the world to examine the finding, the Betalis System was declared off-limits to all other Imperial starships by the Inquisition, and an area stretching thousands of kilometres away from the system was planted with mines.The Inquisition's Ordo Xenos survey team confirmed that the alien vessel had been created by the Aeldari. The Aeldari spacecraft was secured and taken away from the planet for further examination whilst the entire star system was scrupulously scoured by hundreds of thousands Servitors for any further alien artefacts. Decades passed as the mindless Servitors carried out their task, but ultimately no further trace of any Aeldari presence in the system was discovered. The Ordo Xenos contingent departed from the world after determining that the vessel had been abandoned and its pilots had escaped the planet in some other way, leaving the ice-blue primary Betalis star to drift alone in the vastness of space.The Betalis System remained uninhabited for some time following this event, but eventually the Imperium's Administratum cast its gaze upon it and the rich natural resources that it contained: ores, rare elements from the stellar matter expelled from the system's pale star, heavy metals from the system's inner planets and valuable industrial gases that could be mined from the ice of Betalis III. The conditions on the majority of the worlds within the system were deemed too dangerous and unsustaining to support human life, but the two outermost planets -- Betalis III and Betalis IV -- were declared fit for human habitation by the Administratum's bureaucrats.The colonisation of Betalis III then began in earnest. Over the course of four standard decades 57 million Imperial citizens were transported from an overpopulated Hive World, the name of which is now lost in the enormous archives of the Sector histories maintained by the Imperium's vast bureaucracy. When the colonists arrived, they stared in awe as their craft flew over vast areas of featureless, frozen landscape; a world so fundamentally different from the cramped, human-infested hive cities that they had left behind that it boggled the mind.Any of the new colonists who ventured out onto the planet's wintry surface were quickly overcome by the frigid conditions, or were driven mad by agoraphobia -- the wide open landscapes of the world were so alien to the people who have grown up in the confines of a hive city that many a psyche simply could not bear it. The colonists of Betalis III also quickly came to realise that the "brave new lives" they had been promised by the Administratum came at a price, one which had to be first repaid through generations of labour in the mines already being dug into the planet's crust or in the overpowering heat and fumes of the recently constructed massive smelting plants.Twelve generations of the people of Betalis III have been born and died since that time, and the original colonists' descendants are still chained by the Administratum's mandate to the planet and its industry until their forefather's debt for the new opportunity has been deemed fully repaid by the Imperium. The only legitimate way of escaping their ancestor's due for the people of Betalis is to enlist in one of the Imperial Guard regiments that are raised from time-to-time as the planet's human tithe to the Departmento Munitorum.