Spells, artifacts, dragons, balrogs, demons, etc, etc are good for only ONE round of combat. If they fight an army first then they have no effect on the pop center. If there is a really big defensive army there then they only go on the army ONCE. If no defending army then they have an effect on the pop center.
···
_________________________________________________________________
Get your FREE download of MSN Explorer at http://explorer.msn.com/intl.asp.