Incorrect

This page is not technically correct. According to the player-compiled Tau Lexicon (which sites a GW publication),  Tau A to Z and GW's Gue'la Auxiliary Army, Gue'la is the term applied to humans allied with the Tau. I'm going to mark this page as a stub for now, and if changes haven't been made in a week or so return and take a stab at making more comprehensive article.