This can be a good way to knock out siege towers, especially in walled minor settlements that are normally very unlikely to destroy towers. Heavy cavalry or monstrous units work better, assuming there aren't units on the ground trying to distract them. However, the towers have a lot of mass so lightweight units like clanrats will just get pushed aside. You can slow down siege towers by putting units in their way. So knocking out enemy siege towers gives a HUGE benefit to Defenders. Units in a destroyed tower take about 50% of their health when their tower is destroyed. When focus firing a tower they can knock it out very quickly. This changes with upgraded defensive towers, which do progressively more damage, to the point that T3 defensive towers can definitely destroy siege towers by themselves. So most of the time if you have a direct unobstructed path the defensive fire won't destroy the tower A siege tower is sturdy enough to withstand fire from two basic defensive towers.
Let's discuss siege towers! Here's what I know about them :
