Tactics against Necromancers.

In order to effectively counter Necromancers, a rush strategy isn't very effective – there will always be more skeletons. To gain the ability to defeat Necromancers, you need to:
1 - Don't bring cannon fodder with you (remember the vampires)!
2 - Bring very fast units to have the first move.
3 - Use all combat morale modifiers to move more often.