User blog comment:IamJakuhoRaikoben/Chapter 463: Black Carpet, Review./@comment-4933386-20151123094339/@comment-4933386-20151123104421

That's exactly right Carrot and NoNickNeeded; There is absolutely no way 1 Guild is going to be able to defeat an entire empire. Mavis is either overestimating her power, or she actually partially knew Fairy Tail would fail, because would give it a shot anyway.

A master tactician would use the as much resources as possible. :)