Ayutthaya–Lan Na War (1441–1474)

The Ayutthaya–Lan Na War, was a border conflict that took place between 1441 and 1474. It started when the southern kingdom of Ayutthaya invaded the northern kingdom of Lan Na in 1441 and continued with periodic breaks until 1474. Lan Na achieved limited territorial gains but was weakened by internal power struggles and losses sustained during the conflict. Ayutthaya formed what is now the central and southern parts of modern Thailand while Lan Na approximated northern Thailand.

Ayutthaya – Lan Na War

War elephants depicted from a later Siam–Burma war
Date1441–1474[1]
Location
Northern Ayutthaya, Southern Lan Na[2]
Result Stalemate[3]
Belligerents
Kingdom of Ayutthaya[1] Kingdom of Lanna[1][3]
Commanders and leaders
Borommarachathirat II
Trailokanat
Indraracha †[2]		 Tilokaraj
Muen Loknakorn
Muen Harn Nakorn[2][3]

Background

During the 15th century the Ayutthaya Kingdom fought frequent wars against the Lan Na Kingdom in the north, the Khmer Empire of Angkor Wat to the east and the Malay States to the south. King Intharacha of Ayutthaya forced the former Kingdom of Sukhothai to recognize his authority in 1410. The king then invaded Lan Na in 1411, seizing Chiang Rai but failing to capture Chiang Mai and Phayao. In the latter battle the two sides may have used early cannons. In 1424 King Borommarachathirat II ascended the throne of Ayutthaya.[4] After a seven-month siege, he captured Angkor by treachery in 1431. The Khmer retook the city in 1432 and subsequently transferred their capital to Phnom Penh.[5]

The sixth son of the Lan Na king Sam Fang Kaen, Thao Lok, ascended the throne in the aftermath of coup against his father in 1441. Thao Lok was crowned as King Tilokaraj of Lan na, later banishing his father Sam Fang Kaen to Muong Shan in the Shan States. General Phya Samdekyoki, who had previously played an important role in bringing Tilokaraj to power, created a plot in order to assume power himself, the plot was however discovered and Samdekyoki was exiled to Chiang Saen.[6]

Map of Lan Na under King Tilokkarat

Political instability continued as Prince Soi, the son of Sam Fang Kaen from another mother revolted against the new king. Soi refused to pay homage to Tilokaraj and brought his father into his palace in Fang. Troops loyal to Tilokaraj seized Fang and pursued Soi into Muong Terng where he was killed in action. The governor of Muong Terng who remained loyal to Soi even after his death, secretly wrote a letter to Ayutthaya king Borommarachathirat II urging him to attack Lan Na. The governor's treachery was uncovered and he was put to death, nevertheless an Ayutthaya army was already marching on Chiang Mai from the south.[7]

Conflict

Tilokaraj appointed Muen Loknakorn as his commander in chief and tasked him to stop the invading Ayutthayan army. The Lan Na troops took positions opposite of an Ayutthayan encampment and sent out three soldiers to infiltrate the invaders under the cover of darkness. The soldiers untied the Ayutthaya war elephants and cut their tails, sending them into a frenzy; chaos ensued. The Ayutthayans were unable to offer organised resistance to a Lan Na assault on the camp and were forced to retreat. Tilokaraj captured the cities of Phrae and Muong Nan, after successfully employing artillery.[2] Borommarachathirat II failed to capture Chiang Mai in 1442 and was repulsed a second time in 1448. In the latter year Borommatrailokkanat became king of Ayutthaya. He soon created the most advanced military administration in Southeast Asia.[4] In 1451, Sawankhalok broke away from Ayutthaya and joined Lan Na, the conflict between the two kingdoms thus broke out anew. Lan Na forces under Muen Harn Nakorn besieged Chaliang, but a late night counterattack by the defenders repelled the invaders.[2] Ayutthaya captured Chiang Mai in 1452 but was compelled to withdraw after Lan Na received help from the Lao Kingdom of Lan Xang.[4] In 1455 Borommatrailokkanat tried to conquer Malacca in the Malay States but was defeated.[5]

In 1457 hostilities between Lan Na and Ayutthaya resumed. In 1459 Lan Na captured Sawankhalok, which had in the meantime rejoined Ayutthaya. A year later, Ayutthaya reconquered Phrae province, exploiting the fact that Lan Na was engaged in a conflict with the Shan States. Shortly afterwards Lan Na unsuccessfully attacked Sawangkaburi. An Ayutthaya army under Prince Indraracha clashed with Lan Na on the Doi Ba hill; both sides suffered heavy casualties, none taking the upper hand. Prince Indraracha died shortly after the battle after being struck by a bullet.[3] Doi Ba was fought on the outskirts of Chiang Mai in 1463.[5] Relative peace ensued after King Borommatrailokkanat was ordained as a Buddhist monk with the assistance of Lan Na priests. In 1474, Ayutthaya attacked Chienjuen and killed the governor of the city. Lan Na then retook the city, putting an end to the conflict. Despite limited territorial gains Lan Na was weakened by a combination of internal power struggles and casualties suffered during the conflict.[3]

Aftermath

The fighting between Ayutthaya and Lan Na resumed between 1494[5] and 1530. During this period, Lan Na constantly raided their neighbors to their south while Ayutthaya repeatedly mounted invasions in retaliation. Ramathibodi II became king of Ayutthaya in 1491 and ruled until 1529. He instituted compulsory military service to help fight his wars. The Burmese–Siamese War in 1547–49 was inconclusive. A much more dangerous threat developed when Bayinnaung became king of Burma in 1551. Starting in 1563 Bayinnaung conquered both Lan Na and Ayutthaya. The Burmese were not ejected until the Thai revolt of 1587.[8]

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See also

Notes
  1. Jumsai 1976, p. 54.
  2. Jumsai 1976, pp. 54–57.
  3. Jumsai 1976, pp. 58–61.
  4. Dupuy & Dupuy 1977, p. 443.
  5. Dupuy & Dupuy 1977, p. 444.
  6. Jumsai 1976, pp. 51–52.
  7. Jumsai 1976, pp. 53–54.
  8. Dupuy & Dupuy 1977, pp. 514–515.

References
  • Dupuy, Trevor N.; Dupuy, R. Ernest (1977). The Encyclopedia of Military History. New York, N.Y.: Harper & Row. ISBN 0-06-011139-9.CS1 maint: ref=harv (link)
  • Jumsai, Manich (1976). "King Tilokarat (1441–1485)". Popular History of Thailand. Bangkok,Thailand: Claremint. ASIN B002DXA1MO.CS1 maint: ref=harv (link)
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