You do need to have a Barracks (i.e. Veteran Ground Units) or it won't upgrade, not just the Military Academy, which doesn't have that flag - which, was my point, and completely relevant. The other point I made was for those who don't want to have obsolete units in a more modern army. Well, that was pretty rude - don't know where that came from - sorry to have bothered you. And, I was only trying to help anyone who was thinking about upgrading armies - it wasn't for your benefit. And, really, I don't need to impress anyone, particularly someone who has such a negative history on here.