Destroyed Building Parts Pack

then this is what you're looking for! This download will give you some destroyed buildings and demolished walls. A tip: You might need to restart World Edit, or simply change the texture quality in File --> Preferences in the world edit. Otherwise, the model won't show up.
Another nice looking doodad by [i]Punisher_X[/i] and [i]Illidan(evil)X[/i], and you need something more to go with [url="http://warcraft3.filefront.com/file/_Barrel_Pack;65707"]Barrel Pack [/url],