- Medieval technology and warfare.
- There's a war between two sides of a continent.
- Said Continent has a large mountain range crossing the whole land.
- At the north, there's and opening to this mountain range, large enough for lakes and some small villages to occur (not inhabited anymore, due to war)
- The passing is some kind of valley, natural space between the mountains.
- Small groups of people can cross the mountains through other ways, but the death risk and scarcity prevents a large army from doing so.
- Crossing the passage to the other side unseen is impossible for any army, the area is heavily patrolled.
- Both forces are similar in strength.
- The war is ongoing for a long time, let's say around 60-80 years.
Is it plausible to have an ever growing economy around the military camps? Nearby villages providing food and supplies and living a relatively ordinary life there even near the borders? There's an constant risk of death and pillage and rape for anyone that stays near the single battle front. Would that make people want to stay as far as possible or the needs of the military would be more important?
P.S.:I can add more details if requested, but I tried not to make this too broad.