So to update the situation, I can't get my hero back into my home city so it looks like I'm going to have to delete my only world. I have a total of five duplicate heroes in my army -- I discarded everything else -- and when I try to get back into the Home City it says home battalion cap exceeded or something like that. It wont let me delete any of the heroes.
So a whole day's worth of city building is going to waste. Plus I found out today I was charged twice as much when I bought the game than I was supposed to. I'll refrain from saying what I really want to say about this game and the company that produced it and just let you know I'm not pleased.