Equestria at War

Frost is now in Luna's army, but will she be able to face the challenges of war?

Frostbite after dealing with the death of her brother, takes his spot as an officer in Luna's army. She now has to deal with moving away from the ones she loves, to help the cause against the Changeling army so they don't take over Equestria. Will she be able to deal with the challenges of war? or will death take her?