Spahis (French pronunciation: [spa.i]) were light cavalry regiments of the French army recruited primarily from the indigenous populations of Algeria, Tunisia and Morocco. The modern French Army retains one regiment of Spahis as an armoured unit, with personnel now recruited in mainland France. Senegal also maintains a mounted unit with spahi origins as a presidential escort: the Red Guard.
The name is the French form of the Ottoman Turkish word sipahi, a word derived from New Persian "Sepâh", سپاه meaning "army", or "horsemen".
Following the French occupation of Algiers in 1830, detachments of locally recruited irregular horsemen were attached to the regiments of light cavalry assigned to North African service. These auxiliaries were designated as chasseurs spahis. In 1834 they were organised into four squadrons of regular spahis. In 1841 the 14 squadrons by then in existence were brought together in a single corps of spahis. Finally, in 1845 three separate Spahi regiments were created: the 1st of Algiers; the 2nd of Oran and the 3rd of Constantine.
The spahi regiments saw extensive service in the French conquest of Algeria, in the Franco-Prussian War, in Tonkin towards the end of the Sino-French War (1885), in the occupation of Morocco and Syria, and in both World Wars. A detachment of Spahis served as the personal escort of Marshal Jacques Leroy de Saint Arnaud in the Crimean War and were photographed there by Roger Fenton. A contingent of Spahis also participated in the North China campaign of 1860. During the Franco-Prussian War of 1870-71 one detached squadrons of Spahis formed part of the forces defending Paris, while a provisional regiment comprising three squadrons was attached to the Army of the Loire. A serious rising against French rule in Algeria during 1871–72 was sparked off by the mutiny of a squadron of Spahis who had been ordered to France to reinforce those units already there.