Taksin's reunification of Siam

Following the Sack of Ayutthaya and the collapse of the Ayutthaya Kingdom during the Burmese–Siamese War (1765–1767), a power vacuum left Siam divided into 5 separate states—Phimai, Phitsanulok, Sawangburi, Nakhon Si Thammarat, and Thonburi. The state of Thonburi, led by Taksin, would ultimately prevail, subjugating its rivals to successfully reunify Siam under the Thonburi Kingdom by 1770/71.[3][4][a]

Thonburi reunification of Siam
1767 Separate Factions of Siam.png
Map of the five Siamese states (including their capital cities) that emerged following the dissolution of the Ayutthaya Kingdom in 1767
Result Thonburi victory. Reunification of Siam under the Thonburi Kingdom.
Flag of Thailand (Ayutthaya period).svg State of Thonburi (Thonburi Kingdom) State of Phimai
State of Phitsanulok
State of Sawangburi
State of Nakhon Si Thammarat
Principality of Banteay Mas (Hà Tiên)
Flag of the Alaungpaya Dynasty of Myanmar.svg Konbaung Dynasty (Burma)
Commanders and leaders
Flag of Thailand (Ayutthaya period).svg Taksin
Flag of Thailand (Ayutthaya period).svg Chao Phraya Chakri
Flag of Thailand (Ayutthaya period).svg Chao Phraya Surasih
Flag of Thailand (Ayutthaya period).svg Phraya Phichai
Flag of Thailand (Ayutthaya period).svg Phraya Chaban
Flag of Thailand (Ayutthaya period).svg Phraya Kawila
Flag of Thailand (Ayutthaya period).svg Phraya Vaiwongsa
Thepphiphit Executed
Rueang Rojanakun 
Chao Phra Fang (MIA)
Phra Chao Khattiyarachanikhom (POW)
Mạc Thiên Tứ
Flag of the Alaungpaya Dynasty of Myanmar.svg Maengki Manya
Unknown Unknown
Casualties and losses
Unknown Unknown

Five separate statesEdit

After the sacking of Ayutthaya the country had fallen apart, due to the disappearance of central authority. In its absence, five major rival Siamese states occupied the vacuum. Banditry was rampant.[citation needed]

The State of PhimaiEdit

Prince Thepphiphit (เทพพิพิธ) [th], King Borommakot's son who returned to Siam from exile in Sri Lanka during the final siege of Ayutthaya , unsuccessfully performing a diversionary action against the Burmese in 1766, had set himself up as the ruler of Phimai holding sway over land in the Isan region (then known as Khorat), governing from the city of Phimai, which spanned a huge chunk of the Isan region. Out of the five, only Thepphitphit would claim legitimacy to the monarchs of Ayutthaya.[5][6]

The State of PhitsanulokEdit

Rueang Rojanakun (เรือง โรจนกุล) [th], the governor of Phitsanulok, had proclaimed himself independent, with the territory under his control extending from Tak to Nakhon Sawan.

The State of SawangburiEdit

Chao Phra Fang (เจ้าพระฝาง) [th], an influential monk, established his own state with the capital set in the town of Sawangburi, 10 km east of Uttaradit city. His territory extended from Uttaradit to Nan.

The State of Nakhon Si ThammaratEdit

Phra Chao Khattiyarachanikhom (พระเจ้าขัตติยราชนิคม) [th], the governor of Nakhon Si Thammarat, declared his independence and raised himself to princely rank.[7] His territory covered most of what is now southern Thailand.

The State of ThonburiEdit

Phraya Taksin, the governor of Tak, of Teochew and possibly of Thai ancestry, established his new capital at Thonburi, after initially basing his operations out of Chanthaburi.[8] His following was a varied assortment of Chinese merchants, adventurers, and minor nobles,[9] and would go on to successfully reunify Siam in the next few years.

Taksin's campaigns of reunificationEdit


Ruins of the city of Ayutthaya. Due to the nature of its destruction by the Burmese, Taksin abandoned the city and moved his capital to Thonburi, on the opposite bank of what is today Bangkok.

On 3 January 1767, 3 months before the fall of Ayutthaya,[10] Taksin made his way out of the city at the head of 500 followers to Rayong, on the east coast of the Gulf of Thailand.[11] This action was never adequately explained, as the royal compound and Ayutthaya proper was on an island. How Taksin and his followers fought their way out of the Burmese encirclement remains a mystery. He travelled first to Chonburi, a town on the Gulf of Thailand's eastern coast, and then to Rayong, where he raised a small army and his supporters began to address him as Prince Tak.[12] He planned to attack and capture Chanthaburi, according to a popular version of oral history, he said, "We are going to attack Chanthaburi tonight. Destroy all the food and utensils we have, for we will have our food in Chanthaburi tomorrow morning."[13]

On 7 April 1767, Ayutthaya fell to the Burmese. After the destruction of Ayutthaya and the death of the Thai king, the country was split into six parts, with Taksin controlling the east coast. Together with Thongduang, now Chao Phraya Chakri, he eventually managed to drive back the Burmese, defeat his rivals and reunify the country.[14]

With his soldiers he moved to Chanthaburi, and being rebuffed by the governor of the town, he made a surprise night attack and captured Chanthaburi on 15 June 1767, only two months after the sack of Ayutthaya.[15] His army was rapidly increasing in numbers, as men of Chanthaburi and Trat, which had not been plundered and depopulated by the Burmese,[16] naturally constituted a suitable base for him to make preparations for the liberation of his motherland.[17]

Having thoroughly looted Ayutthaya, the Burmese did not seem to show serious interest in holding the capital of Siam, since they left around 3,000 troops under General Suki to control the shattered city. They turned their attention to the north of their own country, which was soon threatened with four massive Chinese invasion.


Taksin's coronation as King of Thonburi at Thonburi Palace, Thonburi, 28 Dec 1767[citation needed]

In October 1767, Taksin captured the town of Thonburi, then a small port just 20 km to the Gulf of Thailand, across the Chao Phraya River from present-day Bangkok. Due to its close proximity to the ocean, Taksin established his new capital at the port town.[18]

In December 1767, Taksin underwent a coronation of sorts, declared himself king, and held a symbolic funeral for the deceased King Ekkathat.[19][20]

Recapture of AyutthayaEdit

On 6 November 1767, having amassed 5,000 troops, Taksin sailed up the Chao Phraya River and seized Thonburi an area opposite of present day Bangkok. He executed the puppet Thai governor, Thong-in, whom the Burmese had placed in charge.[21] He followed up his victory quickly by attacking the main Burmese camp in the Battle of Pho Sam Ton near Ayutthaya.[22] The Burmese were defeated and Taksin won back Ayutthaya from the enemy within seven months of its destruction.[17]

Bang Kung campaignEdit

Hsinbyushin of Burma had never abandoned his plan to force Siam to its knees, and as soon as he had been informed of the foundation of Thonburi as Taksin's capital, he commanded the Governor of Tavoy, Maengki Manya (Thai: แมงกี้มารหญ้า), to subjugate him in 1767. The Burmese Army numbering 2,000 men advanced to the district of Bang Kung in the province of Samut Songkram to the west of the new capital, but was routed by the Thai king in the Battle of Bang Kung in 1767, which is also the site of Wat Bang Kung.[23][24] When more Chinese troops invaded Burma, Hsinbyushin was forced to recall most of his troops back to resist the Chinese.

Invasion of PhitsanulokEdit

Taksin's campaigns of reunification
Separate Factions of Siam in 1767 CE
Separate Factions of Siam in 1768 CE
Separate Factions of Siam in 1769 CE
Separate Factions of Siam in 1770 CE

In 1768, Taksin sent an army to attack Phitsanulok. Taksin was injured during the campaign and had to retreat, however, it was a cadmean victory for the State of Phitsanulok as it was weakened to the point that it was subjugated by the State of Sawangburi. Rueang Rojanakun died on the same year. However, the cause of his death remains unknown. Some scholars speculate that his death was from tuberculosis.

Invasion of PhimaiEdit

In the same year, Taksin sent two commanders, Thongduang (later Rama I) and Bunma, both brothers, to attack the State of Phimai. The invasion was a success and forced Thepphiphit, the ruler of Phimai to flee to Vientiane. Thepphiphit was later captured and then executed.

Invasion of Nakhon Si ThammaratEdit

In 1769, Thongduang, now Phraya Chakri, attacked Nakhon Si Thammarat, but got bogged down at Chaiya. Taksin sent his army to help capturing Nakhon Si Thammarat and finally won. The governor of Nakhon Si Thammarat was taken prisoner by the governor of Pattani and delivered to Taksin. The governor of Nakhon Si Thammarat was pardoned by Taksin and given a residence at the capital at Thonburi.[25]

Invasion of SawangburiEdit

In 1770, Chao Phra Fang, the ruler of the State of Sawangburi invaded the State of Thonburi. The Sawangburi forces reached as far as Chai Nat. Taksin saw the invasion as a threat to his rule. He decided to deal with this matter and ordered an invasion of the State of Sawangburi. Taksin was accompanied by Phraya Phichai, who led the west army and Bunma who led the east army. The Thonburi forces easily took Phitsanulok and captured Sawangburi in the next 3 days. Thonburi had finally reunified Siam as one kingdom.[26] Chao Phra Fang's fate is unknown as he disappeared following the capture of Sawangburi.

In 1770, the Burmese army attacked the city of Sawankhalok, but was repulsed.

Invasion of Banteay MasEdit

In 1771, following repeated failed attempts made by the Cantonese merchant ruler of Banteay Mas (Hà Tiên), Mạc Thiên Tứ, to undermine Taksin in a bid to expand his own territory into Siam and Cambodia, Taksin launched a retaliatory land and naval assault on Hà Tiên, which resulted in Mo Thien Tu's flight, thereby ending the last serious threat to Taksin's early rule.[27] Mạc Thiên Tứ would later return and retake Hà Tiên, with Vietnamese assistance, two years later.


In order to prevent another situation like the one which ended the Ayutthaya Kingdom in 1765-67, Taksin launched several expeditions to vassalize the Northern Thai state of Lan Na, then under Burmese vassalage for around two centuries.[28] In 1770, Taksin started his first expedition to capture Chiang Mai, but was pushed back.[citation needed] In 1771, the Burmese governor of Chiang Mai launched an attack on the city of Phichai, beginning a series of conflicts over Siam's northern cities (Sukhothai[clarification needed], Phitsanulok).

In 1772, the Burmese attacked Phichai, but were repelled, followed by another failed invasion on Phichai in 1773.

In 1774, Taksin successfully took the city of Chiang Mai, thereby ending 200 years of Burmese rule over Lan Na. In response, Hshinbyushin, after finally making peace with the Qing in 1774, sent out a military expedition force of 5,000 men to attack Taksin, who were ultimately defeated by Siamese forces at the Battle of Bangkaeo in Ratchaburi. Taksin spared the lives of the captured Burmese soldiers to boost Siamese morale.

In response, in October 1775, Hshinbyushin sent out a major military expedition of 35,000 men to attack Siam, led by Maha Thiha Thura. It was the largest invasion force the Thonburi Kingdom ever faced and the largest Burmese invasion force into Siam since the Fall of Ayutthaya in 1767.

See alsoEdit


  1. ^ a b In the index, Baker and Phonchaipit claims 1771 to be the date in which Taksin reunified Siam, while Wyatt claims it to be the year 1770.


  1. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Thailand Third Edition (p. 307). (Cambridge University Press. Kindle Edition.)
  2. ^ Wyatt, David K. (2003). Thailand : A Short History (2nd ed.). Chiang Mai: Silkworm Books. ISBN 974957544X.
  3. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Thailand Third Edition (p. 307). (Cambridge University Press. Kindle Edition.)
  4. ^ Wyatt, David K. (2003). Thailand : A Short History (2nd ed.). Chiang Mai: Silkworm Books. ISBN 974957544X.
  5. ^ Wyatt, David K. (2003). Thailand : A Short History (2nd ed.). Chiang Mai: Silkworm Books. ISBN 974957544X.
  6. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Ayutthaya (p. 262). Cambridge University Press. Kindle Edition.
  7. ^ Wood, p. 254
  8. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Ayutthaya (p. 263). Cambridge University Press. Kindle Edition.
  9. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Thailand Third Edition (p. 25). Cambridge University Press. Kindle Edition.
  10. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Ayutthaya: Siam in the Early Modern World (p. 262). Cambridge University Press. Kindle Edition.
  11. ^ John Bowman (2000). Columbia Chronologies of Asian History and Culture. Columbia University Press. p. 514. ISBN 0-231-11004-9.
  12. ^ Eoseewong, p. 126
  13. ^ "King Taksin's shrine". Royal Thai Navy. Archived from the original on July 2, 2010. Retrieved March 29, 2010.
  14. ^ Eoseewong, p. 98
  15. ^ Damrong Rajanubhab, p. 385
  16. ^ "Art&Culture" (in Thai). Crma.ac.th. Archived from the original on June 22, 2009. Retrieved March 29, 2010.
  17. ^ a b W.A.R.Wood, p. 253
  18. ^ Wyatt, David K. (2003). Thailand : A Short History (2nd ed.). Chiang Mai: Silkworm Books. ISBN 974957544X.
  19. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Ayutthaya (p. 263). Cambridge University Press. Kindle Edition.
  20. ^ "History of Ayutthaya - Temples & Ruins - Wihan Phra Mongkhon Bophit". www.ayutthaya-history.com. Retrieved 19 December 2021.
  21. ^ Damrong Rajanubhab, pp. 401–402
  22. ^ Damrong Rajanubhab, pp. 403
  23. ^ Damrong Rajanubhab, pp. 411–414
  24. ^ นิธิ เอียวศรีวงศ์. หน้า 148.
  25. ^ Damrong Rajanubhab, pp. 423–424
  26. ^ Wood, p. 259.
  27. ^ Baker, Chris; Phongpaichit, Pasuk. A History of Ayutthaya (p. 263-264). Cambridge University Press. Kindle Edition.
  28. ^ Wyatt, David K. (2003). Thailand : A Short History (2nd ed.). Chiang Mai: Silkworm Books. p. 124. ISBN 974957544X. "The Burma force had been able to strangle Ayutthaya by seizing the north and the south. Thonburi could not be safe unless these territories at least were denied the enemy or preferably within the Siam orbit."