Mitra Kingdom, northern border, Duke Sterling's Domain.
In the past, this was one of the most prominent territories and major forces within the Mitra Kingdom.
The reason is simple: the ruler here was a Duke, a member of the Imperial Family related by blood to the Mitra Royal Family.
Moreover, the status of Duke Sterling's Domain in the Mitra Kingdom was unmatched by any ordinary Duke's family.
It bordered the Ragna Empire's territory, and when the Ragna Empire and Mitra Kingdom were opponents, should the Mitra Kingdom be invaded, this would be the first place trampled by the iron cavalry of the Ragna Empire.
It had several skirmishes with the Ragna Empire's army and the Imperial Knight Order, triggering numerous small-scale wars, ultimately succeeding in repelling the large forces of the Ragna Empire each time.
In truth, Duke Sterling's Domain served as the Kingdom's primary line of defense against the Ragna Empire.
