The Aiglon (en: Eaglet) was designed by Marcel Riffard after he took over the design department when Caudron merged with Renault. The Aiglon was a two-seat low-wing cantilever monoplane with tandem open cockpits. The first of two prototypes first flew in March 1935 from Issy-les-Moulineaux, France. Two special long-distance versions (the C.610 Aiglon) were built with an increased fuel capacity. In December 1935 a C.610 was flown from Paris to Saigon at an average speed of 80 mph (129 km/h).
The type was popular with French private owners and flying clubs, and a number were sold abroad. With the outbreak of the Second World War many of the aircraft were requistioned by the French Government for use as liaison aircraft by the Armée de l'Air. Total production of the Aiglon was 203 aircraft, including 178 of the basic Renault 4Pgi Bengali Junior powered model.