Henri Laurent Rivière (1827–1883) was a French naval officer and a writer who is chiefly remembered today for advancing the French conquest of Tonkin (northern Vietnam) in the 1880s. Rivière's seizure of the citadel of Hanoi in April 1882 inaugurated a period of undeclared hostilities between France and Dai Nam (as Vietnam was known then) that culminated one year later in the Tonkin campaign (1883–1886).
Adolphe Niel (4 October 1802 – 13 August 1869) was a French Army general and statesman.
He was born at Muret, Haute-Garonne and entered the École Polytechnique in 1821. Niel entered the engineer school at Metz, became lieutenant in the Engineers Corps in 1827, and captain in 1833. He fought in the French conquest of Algeria, participating in the storming of Constantine. There Niel led the engineer detachment with one of the storming parties, and his conduct gained for him the rank of chef de bataillon in 1837. Niel was promoted to lieutenant colonel in 1840 and to colonel in 1846. His next war service was as chief of staff to General Vaillant during the 1849 siege of Rome, after which he was made general of brigade and director of engineer services at headquarters.In 1851, Niel became a member of the Committee of Fortifications. He became a member of the council of state in 1852 and in 1853 was promoted to general of division. In the first part of the Crimean War, Niel was employed in the expedition to the Baltic Sea and directed engineering operations against Bomarsund. Early in 1855 Niel was sent to the Crimea, where he succeeded General Michel Bizot as chief of engineers. For some years Niel had been the most trusted military adviser of Napoleon III, and he was now empowered to advise the generals on the spot in accordance with the wishes of the sovereign and the home government.Niel managed to carry out this delicate and difficult task with as much success as could be expected, and he directed siege operations at the Battle of Malakoff. His reward was the grand cross of the Légion d'honneur. From 1855 to 1859 Niel was employed at headquarters and also served in the French Senate. In the war against the Austrians, Niel commanded the IV Corps and took part in the Battle of Magenta and the Battle of Solferino. Niel was made a marshal of France on the field at Solferino.After he served for some years in a home command, Niel became minister of war and held the position from 1867 to 1869. In this capacity he drafted and began to carry out a far-reaching scheme of army reform, based on universal service and the automatic creation of large reserves which needed only time to mature. Under his system, those men who had purchased exemption from conscription into the army would nonetheless be called up into a new service, the Garde Mobile. He also was able to rearm the whole of the army with the chassepot rifle, but not the Garde Mobile. He did not live to complete the development of his system.Niel died in Paris during an operation for a bladder stone, and a year later the Franco-Prussian War destroyed the old imperial army upon which the new formations were to have been grafted.
Auguste-Alexandre Ducrot (24 February 1817 – 16 August 1882) was a French general. Ducrot served in the Crimean War, Algeria, the Italian campaign of 1859, and as a division commander in the Franco-Prussian War.
At the outbreak of the Franco-Prussian War, Ducrot was tasked with overseeing the deployment of French forces due to his familiarity with the terrain near Wissembourg. His unsupported division was surprised and defeated by a large force of Prussians and Bavarians at the Battle of Wissembourg. At the Battle of Sedan on 1 September 1870, he succeeded to command of the French army when Marshal MacMahon was wounded early in the morning. By that time, it was obvious that a disastrous defeat was inevitable. Ducrot summed up the situation with the famous remark: « Nous sommes dans un pot de chambre, et nous y serons emmerdés. » ("We are in a chamber pot, and we're going to be shit on.")
Ducrot ordered the army to withdraw, but then General de Wimpffen presented a commission authorizing him to succeed MacMahon. Wimpffen overruled Ducrot, and ordered a counterattack that failed completely. Emperor Napoleon III, present on the battlefield, then surrendered the army to the Prussians.
With de Wimpffen having insisted on command, Ducrot refused to accept responsibility for signing the articles of surrender and was imprisoned by the Prussians. He soon escaped, and took part in the Siege of Paris. Ducrot commanded the most important French attack against the Prussian besiegers (the Battle of Villiers, 29 November–3 December 1870). After the defeat of this attack, Ducrot urged the French government to make peace. Cyclist Maarten Ducrot is his great-grandson.