The Battle of River Thracia is an event occuring in the backstory of Fire Emblem: Thracia 776 and elaborated on in the designer's notes of that game. Following the deaths of Prince Quan and Ethlyn, along with a substantial portion of Leonster's Lance Ritter, at the hands of King Travant of Thracia and his Dragon Knights during Chapter 5 of Fire Emblem: Genealogy of the Holy War, later dubbed the Yied Massacre, Thracia finally had the advantage it needed to begin the subjugation of the Manster District in Northern Thracia.