Sept V'iet
The V'iet Sept of Tau Firewarriors is a small colony of Tau living on the loosely controlled deathworld known as D'yannoi to the Tau.
D'yannoi
D'yannoi is a lush deathworld that bands of Catachans and the V'iet hold in conflict, with the occasional Ork raid. The planet has sustained life for billions of years, yielding a thick layer of nutrient and hydrocarbon-rich soil that feeds the many forests and jungles of the planet, save for the desolate wastelands of the poles, quenched by swampy rivers that cut across the landscape and feed into the coastlines of the three continents. The system has a single sun, and is so far away from most shipping and naval routes of both the Imperium and Tau that inhabitants of both sides have cast aside reliance on the arrival of supplies.
V'iet
After years of fighting in the jungle without, the Firew Warriors of the V'iet Sept are considered especially backward and uncivil by their brethren. It is rumored that they now hold the Greater Good in grim skepticism, eat and live alongside their Kroot auxillaries, and desecrate the bodies of their enemies. Without much contact or support from the colonies closer to the Tau homeworld, they have developed a way of life all their own, and a discipline of battle alien to the procedures sacred to most Fire Warriors.