The Tau race

Far from Terra, in the galactic east, lies the empire of the Tau. Based around their homeworld of T'au and encompassing over a hundred colonised worlds the empire is expanding rapidly. The Tau themselves are a young race, but they have developed highly advanced technology. Their empire has already enveloped some lesser alien races. Foremost amongst these subsumed races are the Kroot, a fierce barbaric race who the Tau use extensively as mercenaries.

Tau society is divided into castes. The Fire caste are the warriors, whose task is to protect all the other castes. The Earth caste are artisans and workers. The Water caste are polllicians and bureaucrats. The Air caste are messengers and couriers, as well as pilots. There Is also the Ethereal caste; these are the rulers of the Tau, who unite the other castes to one single purpose. Tau society is strongly united, with all the castes working together for the good of all.