Aedui. While my computer was under repairs at Dell, I played an Aedui campaign on my brother's computer and loved it (even though he played 3 years of it). I took two of the Arverni settlements in the first year or two and they built their military to the max, took Bibracte, but I recaptured it and built up until I smashed their fort and sieged Gergovia in one turn. Next turn, it was all over for the light green men.