In Empire I field 2 kinds of army: a field army and a siege army.Eclectic Dreck said:Hell, even by late game in Empire, it's a silly idea to march onto an enemy's position. I considred my own infantry nothing more than defense against assault for my artillery.
The field army runs very heavy toward infantry (mostly grenadiers and light infantry) with some light cav to scout, mop up routed units and chase particularly annoying units out of hiding. If I bother with arty in these armies, it's always horse artillery for the mobility.
The siege army is VERY artillery heavy. Mortars, mortars and more mortars with a handful of grenadiers to provide security and serve as an assault force should one be necessary after the mortars have turned everything into rubble.