jpowers
Emperor
I like to have 2 on the borders, 1 in the cities with wonders or big cities, 0 in minor internal cities and then two or three stacks of 20+ positioned at the borders, usually in a city, waiting to attack or defend. In the early game, I defend with horse-based units and make sure I have good road networks. I find it more useful to attack enemy stacks with multiple horses from other cities than to sit in my city hoping that spearman really can beat off a tank...