Romans have entered Dacian territory, and the Dacians have put together a defensive force. Beat the Dacians to stay in their territory. It's an arid place with little life, and there are many valleys you have to watch your back in. Don't send in single units alone, or you're asking for the army to be wiped out. It's a medium/hard battle,and you should enjoy rooting the Dacians out of their hidey holes!