If two countries were fighting over a mountain (for mining rights), how would the warfare work? Would there be multiple large-scale battles or some sort of guerilla warfare? There are valleys between the mountains for open warfare, but also enough rocks and hills in surrounding areas to ambush supply routes and such. Would they take over one mine at a time like taking forts or would it all just happen at once?
The mountain in question is already owned by country 1, but it is perilously close to the border to the other country and is actually closer to the capital of country 2 than the capital of the country that owns it. It was just too tempting for country 2 not to reach out and grab it.
Both countries have lots of mines, but country 2 has entire cities underground and their people primarily live deep in the mountains, while country 1's capital city is on the beach at the edge of the mountain range. Country 2's army is far more equipped to fight in the mountainous terrain than country 1.
Neither country has magical aide of any sort, so they must rely on their medieval weaponry and semi-advanced explosives designed for mining that can still wreak some havoc on an army.
I haven't decided for sure what exactly they're mining, since that's not extremely vital to the plotline, so it could be anything from coal to napalm or precious metals or jewels. Suggestions for what they could be mining and how it would affect the war are extremely welcome.