Gaston Galliffet entered the army in 1848 and was commissioned as a sub-lieutenant in 1853. He served with distinction at the Siege of Sevastopol in 1855, in the Austro-Sardinian War of 1859, and in Algeria in 1860, after which for a time he served on the personal staff of the emperor, Napoleon III. During Napoleon III's intervention in Mexico, Galliffet displayed great gallantry in 1863 as a captain at the siege and storming of Puebla, when he was severely wounded. When he returned to France to recover from his wounds, he was entrusted with the task of presenting the captured standards and colours to the emperor, and was promoted chef d'escadron. He returned to Algeria in 1864, took part in expeditions against the Arabs, returned to Mexico as a lieutenant-colonel and, after winning further distinction, became in 1867 colonel of the 3rd Chasseurs d'Afrique. In the Franco-Prussian War of 1870–71, he commanded this regiment in the Army of the Rhine, until promoted to General de Brigade on 30 August. At the Battle of Sedan, which marked the defeat of Napoleon III and the subsequent dissolving of the Second Empire, he led the brigade of Chasseurs d'Afrique in the heroic charge of General Margueritte's cavalry division, which earned him the admiration of the old king ofPrussia. Made prisoner of war at the capitulation, he returned to France during the siege of Paris by the French Army of Versailles, and commanded a brigade during the repression of the 1871 Paris Commune. He was henceforth one of the most criticised figures in French public life, along with Adolphe Thiers who had directed the assault. In the suppression of the Paris Commune, he did his duty, as he saw it, rigorously and inflexibly, and earned a reputation for severity, which, throughout his later career, made him the object of unceasing attacks in the press and the chamber of deputies. In 1872, he took command of the Batna subdivision of Algeria, and commanded an expedition against El Golea, surmounting great difficulties in a rapid march across the desert, and inflicting severe defeats on the revolting tribes. On the general reorganisation of the army, he commanded the 31st infantry brigade. Promoted General de Division in 1875, he successively commanded the 15th infantry division at Dijon, the IX army corps at Tours, and in 1882 the XII army corps at Limoges. In 1885, he became a member of the Conseil Supérieur de la Guerre. He conducted the cavalry manoeuvres in successive years, and attained a Europe-wide reputation on all cavalry questions and, indeed, as an army commander. Decorated Grand Officer of the Légion d'Honneur in 1880 by Léon Gambetta, he was appointed governor of Paris. In 1887, he was also decorated with the Grand Cross of the Légion d'Honneur. He then received the Military Medal for his able conduct of the autumn manoeuvres in 1891. After again commanding at the manoeuvres of 1894, he retired from the active list. Later, he took an important part in French politics, as war minister in Waldeck-Rousseau's cabinet, and distinguished himself by the firmness with which he dealt with cases of unrest in the army in the midst of the Dreyfus Affair. Galliffet then retired into private life, and died on 8 July 1909, aged 79.