The Battle of Bạch Đằng was the last major engagement during Mongol campaigns against Dai Viet and Champa, one of the greatest victories in Vietnamese military history. It was a naval battle between Đại Việt, commanded by Commander-in-Chief Prince Trần Quốc Tuấn (Prince Hưng Đạo), and the invading army of the Yuan dynasty, commanded by Admirals and on the Bạch Đằng River (today Quảng Ninh province), which Prince Hưng Đạo perfectly staged an ambush that destroyed the Yuan fleet, capturing its general, ending Kublai’s intention to conquer Dai Viet and Champa. The battle took place at the Bạch Đằng River, near Ha Long Bay in present-day northern Vietnam. The battle was a tactical masterpiece of the same stature as a previous battle of Bạch Đằng that occurred in 938.