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

Guessed the campaign! I just accumulate skeletons, zombies, and mummies in the castle for a while: they are good for defense and will grow in numbers for a rainy day. In battle, I take skeletons, vampires, liches, and dragons. Dragons deliver the first strike (it's a pity, but they have the highest damage). Then, vampires attack the archers, and liches attack the center. Finally, skeletons deliver the decisive blow.