Axemen? What Axemen? Is this a native getai unit or is it from a type 3 or 4 government?
As to building for high level units i built a level 4 unit thingy in Sarmisa-whatsit just to see whta all the units wer. I can't really afford units that have an upkeep of 500 (most cavalry) and as for the medium cavalry that cost 1000 in upkeep, i cant see the point.