Quote Originally Posted by The_Mark
Ding!

Though, this would be doable:

I'd just set it so that troops in hostile territories would move at, dunno, half the speed compared to those on friendly territory - that could make for a working mechanic, making offensives much more risky. Dunno how it'd relate steppe cavalry armies though, not to mention EB itself.
Didn't I read somewhere that they had already done this for agents? If so, maybe it's a possibility. Certainly, EB is already long enough without adding turns to it.