Hi guys, I just wanted to share something I discovered while working on a mod that deal with towers and siege towers, not sure whether it's already common knowledge but thought I'd share it in case it saves someone else a headache. Part of my mod is to make gun towers do more AP damage compared to bow towers. Anyway, I noticed arrow towers were shredding siege towers compared to guns and cannons that now did all to them. Anyway turns out armour piercing damage does NO damage to siege towers at all.

So yeah, be aware!