Jericho Reach - Notable Worlds: Amenophis IV (Hive World) - A blockaded Hive World with a large native human population. The humans of this world were controlled by an unknown form of machine intelligence known as the Array. Long ago the people of this world discovered lost Standard Template Construct (STC) technology and utilised its knowledge to build an advanced meta-cogitation array. But soon the device attained sentience and it purged all knowledge of the Emperor, Terra, the Imperium and the Imperial Creed and enslaved the humans to its will.Ea (Tau Ruled World) - A world that is composed primarily of deep seas in a vivid violet hue and studded with a multitude of scattered islands. This world had no human population when it was sequestered by the Tau. This world soon became a retreat of sorts for the Ethereal Caste, who used the planet as a place to seek peace and inner harmony, meditating on the proper path for the Tau Empire to take.Highlock IV (Feral World) - A former abandoned Imperial world resting on the edge of the Stygian Break which joined the Tau Empire when it expanded into the Reach. The hardy human population of this high gravity world of ice and snow is covered in hair and incredibly tough. They formed elite formations of dedicated, skilled warriors known as the Highlock Freemen and were used by the Tau as shock troops.Iphigenia (Tau Ruled World) - The world of Iphigenia is a human world with a large population, totaling around seven billion. Its people are born into one of several dozen tribes, ruled by their own king, and in turn united under a High King. Alongside the tribal kings, the people of this world owe their fealty to Tau emissaries known as the Grey Kings. The tribal kings hand over their most technically skilled people to the orbital stations on which the Grey Kings live, and there, re-educate these chosen few and train them in the use of Tau technology. They are then sent to work elsewhere in the Sept under an Earth Caste work team or Air Caste starship crews.Innana (Mining World) - A barren world that contains highly desirable minerals beneath its surface. When the Tau first encountered the small human population of Innana, they offered them a choice; become a part of their empire and help serve as labour in their strip-mining facilities, or be moved off-world and be scattered amongst the various worlds of the Velk'Han Sept. The entire human population unanimously voted to leave their former homeworld. Innana soon after became a primary Mining world that helped fuel the campaign against the Imperial Crusade at the Greyhell Front.Jaya (Tau Ruled World) - A planet abundant in natural resources, Jaya hosted a human population that was relatively advanced technologically and culturally and had existed there for millennia. Jaya had survived the worst of the Age of Shadow relatively unscathed, continuing their way of life virtually unchanged for millennia. When they first encountered the Tau they welcomed them, but soon realized these alien's intentions and quickly mustered their military forces to defend their world. Within six months the Tau attacked and subjugated the entire population. After several decades of rule, they soon faced the threat of Hive Fleet Dagon, which had sent vanguard organisms ahead of the main axis of advance to infect the few isolated pockets of human resistance. The Tau vigorously pursued these isolated humans to 're-code' them to prevent their potential genetic corruption caused by the Tyranid Hive Mind.Krrk'tikit (Tau Ruled World) - On the surface, the world of Krrk'tikit is a barren rock bereft of any identifiable terrain features, but beneath its surface lay crystalline caves that riddle the planet to its very core. Humans never settled this world, and the Tau gave it over to their Vespid auxiliaries who built city-hives into the largest chambers.Tsua'Malor (Tau Ruled World) - Tsua'Malor is the capital world of the Velk'Han Sept and the headquarters of the Mal'caor Shi. It was formerly an advanced human world that was transformed into shining example of civilisation and enlightenment by Earth Caste architects.Va'Jiya (Feral World) - A world populated by numerous tribes of savage humans, this world has a strange eco-system that developed around a strange day/night cycle that causes its forests to rapidly grow during the 'day', followed by an equally rapid decomposition period during the 'night'. With the rising of the sun the endless cycle resumes. This planet is covered in deep, dark forests and fetid swamps. The hyper-violent human population devolved into separate tribes that continuously waged bitter wars against one another.Vallia (Death World) - An inhospitable Death World whose surface is covered in a large canopy of jungle, every corner of the surface in choked in carnivorous flora and fauna. When encountered by the Tau they made an interesting discovery that every sentient plant and animal on this deadly world was interconnected which extended into a form of gestalt intelligence that was able to mobilise the world's lifeforms to repel any who would dare set foot in its domains.Zurcon (Tau Ruled World) - This world is located beyond the coreward borders of the old Jericho Sector. Once held in high regard by the Imperium, Zurcon managed to remain faithful to the Imperium and the Imperial Creed when the entire sector was plunged into the Age of Shadow. When the Tau discovered this world, they infiltrated the ruling class of Zurcon to help insinuate their own beliefs to subtly influence the human population without them being aware of it. The humans were left entirely in the thrall of the Tau Empire, left unaware of the presence of the Achilus Crusade and left ignorant of their manipulation to wage war against their own kind.