1. Battle of Bapheus

    · Bapheus battlefield, Yalakdere-Hersek area, Yalova Province, Türkiye

    Battle of Bapheus
    Wikimedia Commons · CC BY-SA 4.0 · file

    Osman led his forces in the Battle of Bapheus against a Byzantine army, a major victory that strengthened his position in Bithynia. The battle’s date is contested between 1299 and 1302 in modern scholarship. Coordinate is a representative point for the Yalakdere/Hersek identification; the exact battlefield remains disputed.

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