What i do is just wait until there out creeping, use a AM to do bliz on there peasants x2, most of them should be dead by then, if not, kill off the wounded. The enemy should be getting back to his base by now. Tele back to yours, gather up your footies, take out his units, FREE RIDE!! Unless......your playing .vs Orc, or human /w milita, then it gets a little more complicated.