Not only can you take wall towers, you have to take them, unless you like your soldiers to look like a pin-cushion. Taking or destroying towers is crucial, you´ll loose a lot of men if you don´t do it, because usually (thanks to the great city designers with their love for labyrinthsOriginally Posted by _Mithrandir_
) you often have to follow the city street along the walls to find a way into the center. If you do that and don´t take the towers, your army gets ripped to pieces by the tower´s arrows.
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