Sentry Peak (Baen Fantasy)

Plot

When Avram became King of Detina, he intended to liberate the blond serfs. But the northern provinces would not accept him and seceded, choosing Avram's cousin, Grand Duke Geoffrey, as their king. Avram sent his army in against Geoffrey and the war raged for three years until Avram's general moved against the northern army close to the mountain called Sentry Peak--and the battle became far more desperate than either side realized.