Kiếm Hoà-Tuntayakul War

Kiếm Hoà-Tuntayakul War
Part of the Hodenic Wars
Queen Manyaphathon leading the charge of her war elephant force during the Battle of Chayadaeng
Date 1287 – 1290 Location Eastern, Central, and Southern Parts of Modern-Day Tamau Result Kiếm Hoà victory Kiếm Hoà Dynasty gains the entirety of Tantasatityanon, Prapawit, Pak Chokhli and Besanulok Provinces, and parts of the Banlop Province Phạm Khuê installed as Ruler of the Tayamese Territories
Belligerents
Kiếm Hoà Dynasty	Tuntayakul Kingdom
Commanders and leaders
Kiều Thạc Nhu Ngô Bạch Xí Phạm Khuê Ngư Lâm Dũng Huỳnh Hoàng Ân Tạ Hồng Thụy	Thammaraja III Manyaphathon Thoranan Pongsanam Yrita Kachornsak Kunnthorn Pongchandaj

The Kiếm Hoà-Tuntayakul War, also known as Kiều Thạc Nhu's Campaign Against the Tayamese, was a military conflict that was fought between the newly-formed Kiếm Hoà Dynasty under the rule of Kiều Thạc Nhu and the Tuntayakul Kingdom during the late 13th century. It lasted for almost three years, and resulted in the Dynasty gaining control of the southern, eastern, and central parts of the Kingdom.

After the suppression of a Chamic invasion from the south, Nhu and the Council of Lords were determined to retrieve lands conquered by the Tayamese during the Third Anarchy. Subsequently, in the spring (April) of 1278, Nhu's army marched to the southwestern parts of present-day Quenmin, and by February of 1279, the southwestern Quenminese territories were under the Dynasty's control and Nhu appointed the 4th Lord of the Council Ngô Bạch Xí to exercise authority. On March, Nhu marched to the Kingdom's Tantasatityanon Province in eastern modern-day Tamau, divided the army into two with Phạm Khuê, the 5th Lord of the Council, and subjugated the entire province. In the summer, Nhu and Khuê's armies proceeded to move through the Pak Chokhli and Besanulok Provinces, where they encountered stiff resistance from the Kingdom's armies, albeit were able to pull through. In the last years of the conflict, Prapawit Province was conquered, and after King Thammaraja III sued for peace, Nhu installed Khuê as governor of the subjugated territories.

For thirty years, the war had left the Dynasty to possess strict control over the Tayamese territories, until it was lost to corruption, civil war, and a reconquest by Thammaraja IV.