T'au Empire - T'au Caste Ranks: The rank of a person in T'au society is second only to the caste they are born into in determining their position in T'au culture. The ranks are as follows, with the prefix denoting the individual's caste preceding the suffix that determines rank within the caste. The translation of each rank into a Low Gothic term that approximates it follows.RankFire Caste (Shas)Air Caste (Kor)Water Caste (Por)Earth Caste (Fio)Ethereal Caste (Aun)'saalCadet (Apprentice for non-Fire Caste)'laWarriorMessengerBureaucratWorkerPrince'uiVeteranCarrierEnvoySeniorPrelate'vreHeroPilotMagisterOverseerKing'elKnight (Sub-Commander)CaptainDiplomatEngineerHoly'oCommanderAdmiralAmbassadorPlannerEthereal Supreme'saal - A cadet. This rank is typically given to T'au as soon as they enter service in the Fire Caste or any of the other castes, where the term might also translate more appropriately as "apprentice."'la - The first and lowest true rank of T'au society. A Fire Caste shas'la would be a standard Fire Warrior, while an Earth Caste fio'la would be a manual laborer, and an Air Caste kor'la a crewman on a T'au voidship.'ui - The second rank among the T'au. A Fire Caste shas'ui would be the leader of a squad of Fire Warriors (equivalent to an Imperial Space Marine sergeant), or a T'au Battlesuit pilot, while a Water Caste por'ui would be a mid-ranking envoy or diplomat.'vre - The third T'au rank. A Fire Caste shas'vre is a battlesuit team leader or bodyguard, an Earth Caste fio'vre would be the foreman of a T'au factory, and an Air Caste kor'vre a fighter pilot.'el - The fourth and second highest T'au rank, acknowledged as one of high esteem. Fire Caste shas'el are sub-commanders, essentially junior T'au Commanders, Air Caste kor'el command T'au voidcraft as their captains, and an Earth Caste fio'el would be a senior engineer.'o - The highest T'au rank in any caste. An Air Caste kor'o would be the title of a fleet admiral, while a Fire Caste shas'o would be a top Fire Caste field commander, essentially a T'au general and a fearsome warrior in their own right usually placed in command of one or more cadres or even a contingent. An aun'o is the highest rank of Ethereal as Ethereal Supreme and head of the Ethereal High Council, revered by all T'au as the leader of their people.Before the unification of the T'au Empire under the rule of the Ethereals, the four main castes (Fire, Earth, Water, and Air) were constantly vying for power with each other in the form of different tribes and sub-species. The sudden appearance of the mystical T'au of the Ethereal Caste led to the unification of the T'au under the utilitarian philosophy of the "Greater Good."The T'au are the most open and tolerant of the intelligent, starfaring species in the Warhammer 40,000 universe. They are the only faction that prefers to settle their differences peacefully, when possible. They are appreciative of Humans, Aeldari, and the other intelligent species, but hold their own values to be superior to those of others because they view themselves as seeking to build an unselfish and enlightened society.Their tolerance also extends to themselves, as the T'au recognise even lowly Earth Caste fio'la workers as being as important to the operation and well-being of the T'au Empire as the Fire Caste's shas'vre battlesuit leaders or even the Ethereal Supreme aun'o who leads the empire.