In the <a href="https://en.wikipedia.org/wiki/Battle_of_Saint_George" id="mwLg" rel="mw:WikiLink" title="Battle of Saint George">Battle of Saint George</a>, the <a href="https://en.wikipedia.org/wiki/Byzantine_Empire" id="mwLw" rel="mw:WikiLink" title="Byzantine Empire">Byzantines</a> under <a href="https://en.wikipedia.org/wiki/Andronikos_Asen" id="mwMA" rel="mw:WikiLink" title="Andronikos Asen">Andronikos Asen</a> ambush and defeat the forces of the <a href="https://en.wikipedia.org/wiki/Principality_of_Achaea" id="mwMQ" rel="mw:WikiLink" title="Principality of Achaea">Principality of Achaea</a>, securing possession of <a href="https://en.wikipedia.org/wiki/Barony_of_Arcadia" id="mwMg" rel="mw:WikiLink" title="Barony of Arcadia">Arcadia</a>.