[zlefin]

have the ai forge and equip a fair deal of the anti-sc ranged weapons; ensuring that there are often one or more such units in larger armies. (generally a scout or a some mage with a +prec spell).
Choice items are: bow of botulf, vision's foe, fire bola, vine bow, and maybe an ethereal xbow.

Having guys with those items set to fire large monsters can really mess up alot of scs and thugs quite badly.