Editing MedHammer 40,000 (section)

===The Tau===
[[File:MH40kTauPropaganda.png|50%px|thumb|left|Propaganda poster with the Attillans, a key Auxillary of the Tau'Va.]]

Calling themselves an Imperium, after their former Masters, the T'au Va were originally part of the Subject state of the Imperium called the "Cerulean Socii." That changed when The Eldar, concerned about the Imperium's growing strength and success, saw an opportunity to create an ally that could counteract the Imperium without further altering the warp. Thus the Ethereal Caste was created through advanced genetic modification as a way to indirectly control the Tau'va. Taking advantage of a Black Crusade distracting the Imperium, the Tau'Va revolted against the Imperium slaughtering their overlords and kroot immediaries. Before the Imperium could lead a proper counter offensive, the Eldar "chose to ally" with the Tau'Va and announced that the Free Tau Va were under their protection. Unwilling to fight a war with the Eldar Craftworlds in the middle of a Chaos insurgency, The Imperium begrudgingly agreed to a ceasefire.

Despite the T'au Empires small size, they are meticulously well organized with the four former T'au nations transformed into castes. The T'au have highly advanced weapons but rely on their Eldar "allies" for aid in travelling vast distances.

The Tau have seen many different "Ethereal" who unite the Tau, from the origional, and now Expunged Etherials, to the era of Water Caste government, to the new rise of Commander Puretide, and the dominance of the Fire Caste. Under O'shasanuk'la the Tau have carved huge swaths of the Ultima Segmentum, and are now circling the borders of Ultramar.