I won the battle with a Stronghold but it wasn't destroyed, why?

Created by Lizzy D, Modified on Tue, 17 Dec at 6:39 PM by Lizzy D

You can only destroy a Stronghold if you achieve "Complete PvP Victory". This only occurs if you successfully kill every Troop in that Stronghold. If even one Troop survives your attack, then the Stronghold will endure.