Stalliongrad, a nation on its own against an ever persistent enemy.
While it contributed much at first in the early days of Celestia's and Luna's shared rule, those in power gradually cut ties to Equestria in a constructed bid for independence.
So, when it was left to its own defenses against the larger Zebra menace, the citizens of Stalliongrad fought hard.
And, long after the bombs had fallen, they continue the fight for survival in the ruins of their home.