Always keep ranged units away from hand-to-hand combat situations.
Your fast-moving cavalry tear across the map, so leave them in reserve for when the enemy is least expecting an attack.
If you've not got time to invest in a big scrap, make sure you start a game or two of multiplayer for when you do.
Ravenmark: Mercenaries iPhone Cheats
Get back into the battle.
A frustrating way to start a game.
Improbable, but not impossible.