Unfortunately the artillery and gatling guns are so powerful, and with most AI armies possessing little to none (even late in the campaign), I can't remember losing a single encounter (on Normal) with 4 Armstrongs and 4 Gatlings supporting my 10 infantry units, general and calvary (to chase down the routing army afterwards). I keep promising myself to stop using so many arty & gaty pieces, but it is rather silly fun seeing almost all fully stacked armies route before even getting within firing range. I must try a harder difficulty level, or maybe they will patch it so AI armies have more artillery (well besides those silly wooden ones).

TS!