Complex sentence: They get the chance to do just that when Kail's armies battle the Kashugas outside Alinna, but Yuri flees Zuwa's clutches, riding a horse for the first time in her life, and unwittingly turns the tide of the battle in Kail's favor.
Split into simpler sentences: They get the chance to do just that when Kail's armies battle the Kashugas outside Alinna. But Yuri flees Zuwa's clutches, riding a horse for the first time in her life, and unwittingly turns the tide of the battle in Kail's favor.