In between 2:40 to 5:04 there is a mistake which happens, another army which are introduced in between. Sorry for that after 5:04 sane army video available so don't worry for that you can watch whole video. This is a mistake which happens during editing time.
quite helpful and much easier, was looking for centre based th. attacks . its impressive that couple of fully air and ground attacks have been shown to beat those annoying layouts ,which indicates that same base can be hit in two ways ( ground or air) depending on your preference.
