wall

Greetungs everyone, I have been looking around for more information on the effectiveness of a wall 25 against flying units. In a revolt world, is it even effective to build up the wall? It seems as Manti Nukes can just bypass a Bireme wall and attack the land units as is, clearing it for the...

Hi Does anyone know how many levels the city wall will be knocked down if i use a catapult to attack a city? Thanks

This is a really trivial question, but I couldn't find it in the wiki, and I had trouble finding it on a google search as well. So sorry if this seems like a waste of forum space to more experienced players. Does the wall get destroyed whenever you get attacked? In theory, the wall seem useful...