Sid already introduced a comparable concept with "Colonization".
After calling for a Revolution, the Revolutionary Army got a defense bonus when encountering the Royal Army outside the villages - but only there! In settlements, there wasn't any "home turf" bonus.
Thus the usual strategy for the game was to defend in fortified cities and encounter the Brits on open ground. But never (!) attack out of cities.
On the other hand, colonists got a special defense bonus in settlement tiles when they had to defend themselves against native American raids.
And this game is 10+ years old, so it shouldn't be that difficult to include this into the combat system.
After calling for a Revolution, the Revolutionary Army got a defense bonus when encountering the Royal Army outside the villages - but only there! In settlements, there wasn't any "home turf" bonus.
Thus the usual strategy for the game was to defend in fortified cities and encounter the Brits on open ground. But never (!) attack out of cities.
On the other hand, colonists got a special defense bonus in settlement tiles when they had to defend themselves against native American raids.
And this game is 10+ years old, so it shouldn't be that difficult to include this into the combat system.