Definitely not what I thought when I saw 'attrition'. What I thought was more in military/historical, terms: Battles of attrition where whoever lasts the longest wins, like WWI.
Sounds like a good idea though, adding that when armies run out of food, they pillage nearby villages and farms, destroying the mines and irrigation on those tiles.
Sounds like a good idea though, adding that when armies run out of food, they pillage nearby villages and farms, destroying the mines and irrigation on those tiles.