[NTJedi]

Any combinations of the following will help:

Curse
Mass casting of Raise Skeletons
Archers (*bonus with flaming arrows)
Mechanical Men
Living Statues
BaneLord Thugs (equip appropiately)
Summer Lions (expensive yet they work)
Living Air (Air Elementals work for preventing retreating too)
Wolven Winter for the province they enter... thus they receive massive increase for encumberance. (Endo's correct... changed to Wolven Winter.)