The Salmson 2, military designation Salmson 2 A2 was a French biplane reconnaissance aircraft made by Salmson. It was developed to a 1916 requirement. Along with the Breguet 14, it was the main reconnaissance aircraft in use with the French army and the American Expeditionary Force's aviation units in 1918. At the end of the First World War, one-third of French reconnaissance aircraft were Salmson 2s.