Tactical techniques for conducting battles in Heroes of Might and Magic II.

Zombies are good, but there are fewer of them than skeletons, and they don't replenish on their own. It's better to use mummies for this – they have a curse.
I remember one battle where I used a bone dragon and 18 archers to defeat 3,000 peasants. After that, I had about a thousand skeletons, and I completed the map without any problems.