Quote Originally Posted by Jasdoif View Post
It's worth noting that stationary defenses aren't counted as "units" in some games; though I'd be surprised if Parson hadn't noticed any such things by now. On the other hand, maybe city defensive units don't appear until combat starts, like the boiling oil cauldrons in Lords of the Realm II.
Or the tower archers in HoMM III. Depending on your fortification level, you have zero, one or three of them; and they can only be destroyed by siege engines (or cyclops, who can function as siege engines).