The Battle of Thuận An (20 August 1883) was a clash between France and Vietnam during the period of early hostilities of the Tonkin Campaign (1883–1886). During the battle a French landing force under the command of Admiral Amédée Courbet stormed the coastal forts that guarded the river approaches to the Vietnamese capital Huế, enabling the French to dictate a treaty to the Vietnamese that recognised a French protectorate over Tonkin. The French strike against the Vietnamese in August 1883, sanctioned by Jules Ferry's administration in Paris, did more than anything else to make a war between France and China inevitable, and sowed the seeds of the Vietnamese Cần Vương national uprising in July 1885.
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Battle of Thuận An in the context of Treaty of Huế (1883)
The Treaty of Huế, (Vietnamese: Hòa ước Harmand, Hòa ước Quý Mùi) concluded on 25 August 1883 between Vietnam (Nguyễn dynasty) and France, recognising a French protectorate over Vietnam being divided into Annam and Tonkin. Dictated to the Vietnamese by the French administrator François-Jules Harmand in the wake of the French military seizure of the Thuận An forts, the treaty is often known as the 'Harmand Treaty'. Considered overly harsh in French diplomatic circles, the treaty was never ratified in France, and was replaced on 6 June 1884 with the slightly milder 'Patenôtre Accords' or 'Treaty of Protectorate', which formed the basis for French rule in Vietnam until the 1949 Élysée Accords signed between France and emperor Bảo Đại.
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