Attacking from multiple provinces into one provinc

[Ironhawk]

So, I was thinking about this tactic more and discussing it with a fried. It's really quite an exploit if it does work this way. In the examples above we have only been considering trying to defeat an attack from multiple sides...

But what if you used this tactic against every single enemy attack over the course of a war?? If you had an array of scouts available, you could potentially slow any enemy advance by 50% at practically no cost! Just constantly bombard any attacking force with scouts. Its really a disturbing concept when you look at it like that.