Here it is, this is how my Tau commander got his name. (note I still have to get the model, but still...)
"Shas'O Sio'era'sha'is, known to the Imperium as Commander Cyclone, earned his name much as Commander Shadswosun did: through a single decisive victory. In the opening moves of the Ziest Campaign, a planet that was known in the Imperium as Angritus was re-invaded after the Tau conquered it. The Tau had an established colony there and needed plenty of time to evacuate. One by one though the cities fell to the brutal onslaught of Imperial Guardsmen and Space Marines. Only the capital remained in Tau hands, as well as pockets of the countryside. The Coalition Command on the planet faced seemingly only one option: abandon the planet and retreat. Much would be left behind and it would be a bitter blow, but the attack had been too swift and too vicious to repel. As they prepared the final evacuation, the recently promoted commander offered to buy them more time to retreat properly. He believed he could stall the Imperial forces long enough to evacuate all Tau personnel, loyal humans (Gue'vesa) and technology. Though sceptical, the command trusted their military leader and began a thorough and proper evacuation.