Well, the Roman Army could march 20 miles a day.
That's 600 in a month, which equates to 14,400 in two years. That's obviously just a general idea. We could say in reality probably less than half that in that kind of long period. In this game we can get about 400 per turn which is 400 per two years. So basically the armies in this game can march about 1/2 a mile per day.
So, essentially, you should be able to march from one side of Europe to the other in one turn, which of course would be ridiculous in gameplay terms....which is why a real-time campaign would make much more sense, especially with a 3D map.
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