Ayutthaya–Burma War

Name: Ayutthaya–Burma War
Start: 1593
End: 1600

Type Event Region Southeast Asia Time 1593–1600

After King Naresuan declared Ayutthaya's complete break from vassalage to the Toungoo dynasty in 1593, Burmese forces invaded south on a large scale.

Timeline

1593Ayutthaya · ThailandTaking advantage of the new accession and weakened state of Toungoo king Nanda Bayin, King Naresuan openly refused tribute and prepared for war. Burma dispatched a large army south intending to reconquer Siam, and the two sides faced off in central Siam.
1593–1594Nong Sarai · ThailandThe Siamese army decisively defeated Burmese forces at Nong Sarai and elsewhere; Naresuan personally slew a Burmese general and the Burmese army retreated in rout. Thereafter Siam shifted from defense to offense, moving north to recover former vassal states such as Chiang Mai and Lamphun, further weakening Toungoo control over Lanna.
1595–1600Siam–Burma border · Southeast AsiaIn the mid-to-late 1590s, the two sides fought back and forth along the Salween River and the Tenasserim Mountains; Burmese forces never again effectively controlled Siam. Ayutthaya consolidated its independence, while the Toungoo dynasty fell into long-term decline through civil and foreign wars.

A History of Thailand — Chris Baker and Pasuk Phongpaichit (2014)
The Cambridge History of Southeast Asia, Volume 1 — Nicholas Tarling (ed.) (1999)