"Ashes' Will" - "Awakening of the Bull" [Campaign 2, Mission 3]

I didn't have any glitches with this mission; I just took out the castles with catapults, and everything was fine.

But I, on the contrary, didn't destroy a single town... And I wouldn't have been able to destroy the two lower-corner towns even if I wanted to... There's such a crowd of neutrals guarding the catapult that it's quite a challenge.