Tactics for the Stronghold.

What about Galtran? Sure, it's just a hundred skeletons without archers, but combined with Tant, it's quite good for clearing an area ;)

Just a hundred skeletons :) . It can break through any crypt, single-unit monsters, 1-2 dwarven archers, and imps. Moreover, not only money and experience are gained, but also the number of these skeletons increases.