admiral who initiated the French invasion of Vietnam in 1858 and the subsequent conquest of Cochinchina, now southern Vietnam.

Rigault de Genouilly entered the navy in 1827 and attained the rank of ensign three years later. In 1841 he was promoted to captain and was given command of the ship “Victorieuse” bound for the Far East, where he participated in an attack (1847) upon the port of Tourane (now Da Nang) on the pretext of protecting the French Catholic mission there. Shortly thereafter, he was rebuked by his government for an unauthorized intervention in Korea. He fought bravely in the siege of Sevastopol in the Crimean War, and by 1854 he had attained the rank of rear admiral.

Rigault de Genouilly took command of French naval forces in China and Cochinchina and in 1857 held Canton with the British, who had joined France in declaring war on China. The following year, as vice admiral, he once again attacked Tourane; he was told to secure it with the forces at his disposal and he was not to negotiate with the Vietnamese. On Sept. 1, 1858, he took the city and would have proceeded to the capital at Hue, but his ships could not navigate the shallow river inland; instead, he turned south to conquer Saigon and achieved his objective with the help of Spanish troops, Feb. 17, 1859. With his men debilitated by the climate and disease, his supplies low, and no reinforcements forthcoming, he could neither consolidate his conquests nor bring the Vietnamese to surrender. The following October 20 he asked to be relieved of his post.

Back in France, Rigault de Genouilly became a senator (1860), was promoted to admiral (1864), and was named minister of the marine and of the colonies (1867). In the Franco-German War (1870–71), he rejected his appointment as commander in chief of an expedition to the Baltic Sea and went to Spain to live out his years.