Ranged units should have some collateral damage ability versus trebs (or artillery in general). If an archer (or longbowman) is attacking, it's all well and good to get your maceman defending the attack, but the archer probably would want to take out as many trebs and other ranged defenders so they don't get shot back at while attacking. This should include Horse Archers, crossbowmen, archers, longbowmen,and any gunpowder units.
Hope the rambling made sense.
Hope the rambling made sense.
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