well the Gaesatae (sp?) were not officially released. but it's basically a Milnaht(sp?) without the pants.
and i never really got the idea what is impressive about a naked guy fighting when it's 5 degrees outside..
but fighting without a shirt would mean more freedom of movement.

btw, are warriors (who where historically picked for their size) actually larger than regular soldiers? (game-EB)? thats terrifying!