This is a list of wars involving the Kingdom of Thailand, its predecessor states, and by Siamese people, from antiquity to the present day. It also includes wars fought outside Thailand by the Thai military.
Sukhothai Kingdom Conflict Combatant 1 Combatant 2 ResultsRecapture of Sukhothai(c. 1238 ) Location: Sukhothai Pho Khun Bang Klang Hao Pho Khun Pha MueangKhom Sabat Khlon LamphongVictory Bang Klang Hao declared King of Sukhothai as Sri Inthrabodinthrathit.Battle of Chod(c. 1257) Location: Sukhothai Prince Ram KhamhaengKhun Sam ChonVictory Repelled invaders; established Ram Khamhaeng's military prestige.Territorial Expansion Wars(Late 13th Century) Location:Lampang, Phrae, Nan, Phitsanulok, Vientiane,Nakhon Si Thammarat Kingdom,Mon kingdoms and the Bay of Bengal Sukhothai KingdomHanthawaddy kingdomNakhon Si Thammarat KingdomMuang SuaVictory Expanding its sphere of influence Under King Ram Khamhaeng the Great Hanthawaddy kingdom and Nakhon Si Thammarat Kingdom become a Sukhothai Kingdom vassal stateThe Sukhothai- Ayutthaya War(1350–1438) Location: Sukhothai Sukhothai KingdomAyutthaya KingdomSukhothai lost Sukhothai lost its southern territories (Phitsanulok and Kamphaeng Phet) and became a vassal state of Ayutthaya Kingdom eventually.
Ayutthaya Kingdom Conflict Combatant 1 Combatant 2 ResultsFall of Angkor(1352-1431) Location: Angkor, Khmer Empire Ayutthaya KingdomKhmer EmpireSiamese victory Fall of the Khmer EmpireAyutthaya–Lan Na War(1441–1474) Location: Northern Ayutthaya, Southern Lan Na Ayutthaya KingdomKingdom of LannaStalemate Indraracha Died in the War.Burmese–Siamese War (1547–1549) Location: Upper Tenessarim coast, western and central Siam Ayutthaya Kingdom Toungoo dynastyInconclusiveBurmese–Siamese War (1563–1564) Location: Ayutthaya, Phitsanulok, Sukhothai Ayutthaya Kingdom Toungoo dynasty Sukhothai Kingdom Lan Na KingdomBurmese victory Ayutthaya becomes a Burmese vassal stateBurmese–Siamese War (1568–1569) Location: Ayutthaya, Phitsanulok, Lan Xang, and Kamphaeng Phet Ayutthaya Kingdom Lan Xang Kingdom Toungoo dynasty Sukhothai Kingdom Lan Na KingdomBurmese victoryBurmese–Siamese War (1584–1593) Location: Ayutthaya Kingdom and lower Tanintharyi Region Ayutthaya Kingdom Toungoo dynastySiamese defensive victory Siam gains independenceSiamese–Cambodian War (1591–1594) Location: Cambodia Ayutthaya Kingdom Kingdom of Cambodia Supported by:
Spanish Empire Kingdom of PortugalSiamese victory Cambodia become the Siamese vassal stateCambodian–Spanish War(1593–99) Location: Cambodia Cambodia Supported by Ayutthaya Kingdom Johor Sultanate (Muslim Malay merchants) Kingdom of Champa (Muslim Cham merchants) Spanish Empire Spanish protectorate in Cambodia Philippines Mexican recruits Kingdom of Portugal Cambodian allies Japanese mercenariesSiamese Victory Cambodia remains as a Siamese vassal Spanish Empire fails to make Cambodia a protectorate Burmese–Siamese War (1593–1600) Location: Southern and central Burma Ayutthaya Kingdom Toungoo dynastyInconclusive, both sides claim victory Naresuan managed to secure his kingdom's independence and regain some territories including Lan Na and Tanintharyi region but unable to achieve his primary objectives, capturing Pegu. Siamese army had to withdraw due to logistical issues and an epidemic that broke out among the troops which led to Burmese defensive victory. These campaigns were largely unsuccessful and led to heavy casualties on both sides and weakening both empires to some extent.Burmese–Siamese War (1609–1622) Location: Tenessarim coast, Lanna Ayutthaya Kingdom Toungoo dynastyBurmese defensive victorySpanish-Siam War (1624–1636) Ayutthaya Kingdom Dutch East India Company Iberian Union Crown of Castile Spanish East Indies Council of Portugal Macau Goa MalaccaSiamese victory Dutch hegemony on Southeast Asia 150 Spaniards killed Burmese–Siamese War (1662–1664) Location: Lan Na, Northern Siam, Tenasserim coast and Burma Ayutthaya Kingdom Toungoo dynastyBurmese defensive victory Burma defends upper Burma Status quo ante bellumBurmese–Siamese War(1675–1676) Location: Tenasserim coast Ayutthaya Kingdom Toungoo dynastyMilitary stalemate Burma defends upper Tenasserim coast Siam defeats counter Burmese invasionAnglo-Siamese War(1687–1688) Location: Mergui and Coromandel coast Ayutthaya Kingdom
Governorship of Tenasserim and Siamese garrison of Mergui
English defectors East India CompanyInconclusive Siam closed to Company traders No peace treaty signedSiege of Bangkok(June 1688–November 13, 1688) Location: Bangkok, ThailandJean Vollant des Verquains History of the revolution in Siam in the year 1688, in Smithies 2002, pp. 95–96. Ayutthaya KingdomNaval support by: Dutch East India Company French East India CompanyDecisive Siamese victoryBurmese–Siamese War(1700–1701) Location: Ayutthaya Kingdom Ayutthaya Kingdom Toungoo dynastySiamese defensive victory Siam defeats Burmese invasionSiamese–Vietnamese War (1717)Tucker, p. 13.Tucker (2009), p. 722. Location: Cambodia Ayutthaya KingdomNguyễn lordsSiamese victory Siam gains suzerainty of Cambodia Vietnam annexes several border provinces of CambodiaBurmese–Siamese War (1759–1760) Location: Tenasserim coast, Gulf of Siam coast, Suphanburi, Ayutthaya Ayutthaya KingdomKonbaung dynasty Inconclusive Burmese gained Dawei and upper Tenasserim but failed to capture Ayutthaya.Burmese–Siamese War (1765–1767) Location: Tenasserim, Siam Ayutthaya KingdomBurmese victory Burma temporarily captures most of Ayutthaya's major cities; by 1770, only Tenasserim remains under Burmese control
Thonburi Kingdom Conflict Combatant 1 Combatant 2 ResultsNotable battlesThonburi reunification of Siam (1767–1771) Location: Siam Thonburi Kingdom Phimai cliquePhitsanulok cliqueSawangkhaburi cliqueNakhon Si Thammarat cliquePrincipality of Banteay Mas Konbaung DynastyThonburi victory Reunification of Siam under the Thonburi Kingdom.Siamese–Vietnamese War (1771–1773) Location: Cambodia, Southern Vietnam Thonburi KingdomĐàng Trong (Nguyễn Lords) Kingdom of CambodiaHà Tiên politySiamese victorySiamese conquest of Lan Na (1774–1775) Location: Lan Na Thonburi KingdomSiamese victory Southern parts of Lanna, including Chiangmai, Lampang and Lamphun, became Siamese vassalsBurmese–Siamese War (1775–1776) Location: Hua Mueang Nuea or Northern Siam, Central Siam and Lan Na Thonburi KingdomSiamese victory Depopulation of Northern Cities and destruction of Phitsanulok Battle of Bangkaeo (1775)Lao–Siamese War (1778–1779) Location: Khorat Plateau and Laos Thonburi Kingdom Kingdom of Luang Phrabang Oudong Kingdom Kingdom of Vientiane Kingdom of ChampasakSiamese victory Lao kingdoms of Luang Phrabang, Vientiane and Champasak came under Siamese suzerainty.The rebellion of Phraya San(1781–1782) Location: Thonburi Thonburi Kingdom Phraya SanPhraya San's forces was defeated General Rama I easily crushed Phraya San's forces and took control of the capital. Deposition of King Taksin and the rise of Rama I, establishing the Chakri dynasty.
Rattanakosin Kingdom Conflict Combatant 1 Combatant 2 ResultsNotable battlesSiamese–Vietnamese War (1784–1785) Location: Rạch Gầm River and Xoài Mút River(near Mỹ Tho River, in present-day Tiền Giang Province, southern Vietnam) Rattanakosin Kingdom Kingdom of Cambodia Nguyễn lordsHà Tiên Protectorate Tây SơnTây Sơn defensive victory Siamese-Cambodian armies retreat back to LaosBurmese–Siamese War (1785–1786) Location: Western, Northern and Southern Siam, Lan Na Rattanakosin KingdomLanna Kingdom Konbaung dynastySiamese defensive victory Portions of Western Siam depopulated until the 1870s Tha Din Daeng Campaign (1786)Tavoy campaign (1788) Location:Tenasserim Coast Rattanakosin Kingdom Konbaung dynastyBurmese defensive victoryBurmese–Siamese War (1792–1794) Location:Tenasserim Coast Rattanakosin Kingdom Konbaung dynastyBurmese victory Tenasserim remained within the Burmese sphere of influence, Tenasserim Coast depopulatedBurmese–Siamese War (1797–1798) Location: Lanna Kingdom, Northern Thailand Rattanakosin Kingdom Kingdom of Chiang Mai Konbaung dynastySiamese defensive victory Siam gained Lan Na as vassalsBurmese–Siamese War (1802–1805) Location: Northern Thailand, Kengtung, Sipsongpanna Rattanakosin Kingdom (Siam) Chiang Mai (tributary to Siam) Kingdom of Vientiane (tributary to Siam) Konbaung dynastySiamese victory Forced relocation of Tai Khuen and Tai Lue people to Siam Siam gained control of Chiang SaenBurmese–Siamese War (1809–1812) Location: Phuket Rattanakosin Kingdom Konbaung dynastySiamese victory Siam successfully defends Phuket from a Burmese invasion Tenasserim Coast is depopulatedCambodian rebellion (1811–1812) Location: Cambodia, Southern Vietnam Rattanakosin Kingdom Cambodian pro-Vietnamese faction Nguyễn dynastyCambodian anti Siamese victory Vietnamese forces restore Ang Chan to the Cambodian throneSiamese invasion of Kedah(1821) Location: Kedah Rattanakosin Kingdom Kedah SultanateSiamese victory Exile of Ahmad Tajuddin Halim Shah II Imposition of direct Siamese rule on Kedah Start of the Kedahan resistanceFirst Anglo-Burmese War(1824-1826) Location: Burma, East Bengal, Manipur British Empire East India Company Supported by: Rattanakosin Kingdom Konbaung dynastySiamese-allied victory
Treaty of Yandabo Beginning of British rule in Burma Burma cedes Manipur and Tenasserim to BritainLao rebellion (1826–1828) Location: Central Laos Rattanakosin Kingdom Kingdom of VientianeMilitary support:Nguyễn dynastySiamese victorySiamese–Vietnamese War (1831–1835) Location: Cambodia, Southern Vietnam Rattanakosin KingdomNguyễn dynastyVietnamese victory Cambodia becomes a vassal state of VietnamCambodian rebellion (1840) Location: Cambodia, Cochinchina Khmer anti-Vietnamese rebelsSupport: Rattanakosin KingdomNguyễn dynastySiamese-allied Victory Siamese interventionCambodia independence from VietnamCambodia came under joint Siamese-Vietnamese suzeraintySiamese–Vietnamese War (1841–1845) Location: Cambodia, Southern Vietnam Rattanakosin Kingdom Khmer anti-Vietnamese rebelsNguyễn dynastyStalemate Cambodia came under joint Siamese-Vietnamese suzeraintyBurmese–Siamese War (1849–1855) Location: Kengtung, Trans-Salween region Rattanakosin Kingdom Konbaung dynastyBurmese defensive victoryHaw wars(1865–1890) Location: Eastern Cambodia, Kingdom of Siam Luang Phrabang Haw Rebels (Red flag and Striped flag bands)Siamese victoryFranco-Siamese conflict(1893) Location: French Indochina, Siam Kingdom of Siam French Republic French IndochinaFrench victory; Land on east bank of the Mekong ceded to French Indochina Paknam incident (1893)Ngiao rebellion(1902) Location: Phrae Kingdom of SiamShan (Ngiao) rebelsSiamese victoryWorld War I(1917-1918) Location: Europe (Decapitation Boonpeng 1919)Allied Powers:
(1914–17)
(1915–18)
(1916–18) (1916–18) Hejaz (1916–18) (1917–18) China (1917–18) (1917–18) Siam (1917–18)
Central Powers:Siamese-allied victory Central Powers victory on the Eastern Front nullified by defeat on the Western Front Fall of all continental empires in Europe (including Germany, Russia, Turkey and Austria-Hungary) Russian Revolution and Russian Civil War – the collapse of the Russian Empire and the subsequent formation of the Soviet Union Widespread unrest and revolutions throughout Europe and Asia Creation of the League of Nations (more...)* Siamese occupation of Germany
After 1932 revolution Conflict Combatant 1 Combatant 2 ResultsNotable battlesBoworadet Rebellion(1933) Location: Central Thailand, Nakhon Ratchasima, Lak Si and Ratchaburi SiamPeople's PartyRebel faction led by Prince BoworadetPeople's Party Victory Suppression of the rebellion, consolidation of power by the People's PartyFranco-Thai War(1940-1941) Location: French Indochina Thailand Thai victoryYon can see Victory monument in bangkok Tucker, World War II: The Definitive Encyclopedia and Document Collection p. 649