Quote Originally Posted by pevergreen
Plus militia troops = no upkeep!
Well actually there is a limit to this
2 free for town
3 free for large town
4 free for city
5 free for large city
6 free for huge city

Luckily the game automatically detects the highest upkeep unit and gives the free upkeep to it. You can see which unit gets the bonus by the darken blue unit card. Because of this you can stock up to 6 high lvl militia to better defend your city and the rest town militia because they have the lowest upkeep.

Numbers still seem to do the trick. Bigger size units seem to give more garrison PO's