Kiếm Hoà-Tuntayakul War
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 rebellion instigated Trần Lãm Thạc, Nhu and the Council of Lords were determined to retrieve lands conquered by the Tayamese during the Third Anarchy. Subsequently, in the autumn of 1277, Nhu's army marched to the southwestern parts of present-day Quenmin, and by February of 1278, the southwestern Quenminese territories were under the Dynasty's control and Nhu reached the eastern boarders of the Kingdom. On March, Nhu marched to the Kingdom's Tantasatityanon Province in eastern modern-day Tamau, divided the army into two with Ngư Lâm Dũng, and subjugated the entire province. In the summer, Nhu and Dũng'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. King Thammaraja III fled westward, and Nhu was effectively accepted by the Tayamese as their sovereign. Afterwards, the Arantho Kingdom was created with its eponymous capital being near the dynasty's borders, and Nhu was made Queen Regnant and appointed Kulthorn of Praphun as her viceroy.