Originally posted by Zen: You can send Gems/Gold/Items, but no troops. Though you can arrange for a "Trade" with Commanders with a degree of success.
I don't think a Supply or "Going through Allies Territory" is a bad idea at all. Though how hard it would be code would be interesting.
I however, don't feel that shared vision should be given. Because even if you're allies, sometimes you like to keep some information to yourself.
Also having three armies battles could be very interesting. Such as 2 allies defending the castle against an enemy hordes, or trying to conquer it together.
Nit likely to hapen for Dom2 though, since it would probably require significant changes in the code. But maybe for Dom3?...