[PvK]

Use the Holy-3 priests to keep the militia fighting with Surmon of Courage, and/or a magician with group protective or other group-enhancing spells, and/or a small other force whose strength will be multiplied by the enemy also having to deal with the cannon fodder. Cannon fodder is effective, but only as an element of "combined arms" - you generally need some other elements to make it worthwhile.

PvK