Siamese–Vietnamese War (1771–1773)

Siamese–Vietnamese War (1771–1773)
Part of Siamese–Vietnamese Wars

Siamese invasion of Cambodia and Hà Tiên in 1771 and Vietnamese counter-offensives in 1772;
Red represents the Siamese.
Yellow and Brown represent Cambodia and the Nguyen Lord of Cochinchina.
DateOctober 1771 – March 1773
Location
Result Siamese victory
Belligerents
Thonburi Kingdom (Siam) Đàng Trong (Nguyễn Lords)
Kingdom of Cambodia
Hà Tiên polity
Commanders and leaders
Taksin
Phraya Yommaraj Thongduang
Chaophraya Chakri Mut
Phraya Phiphit Chen Lian
Phraya Phichai Aisawan Yang Jinzong
Ang Non
Nguyễn Phúc Thuần
Nguyễn Cửu Đàm
Tống Phước Hiệp
Nguyễn Hữu Nhơn
Nguyễn Khoa Thuyên
Outey II (Ang Ton)
Oknha Yumreach Tol
Mạc Thiên Tứ
Mạc Tử Dung
Mạc Tử Thảng
Strength
20,000 More than 12,000

The Siamese–Vietnamese War (1771–1773) was a war between Siam (modern Thailand) of the Thonburi Period in the reign of King Taksin and the Nguyễn Lords of Cochinchina or Southern Vietnam. The war also involved Cambodia and the Hà Tiên polity, which were allies of the Nguyen Lord.