Caudron R.4
The Caudron R.4 (officially Caudron 40 A.3) was a French World War I twin-engine biplane reconnaissance/artillery cooperation aircraft and the progenitor of a series of successful aircraft that filled a variety of roles with the French Aéronautique Militaire. == Development == The first prototype was completed in June 1915 however it wasn't until November that the first examples was handed over to the authorities for service evaluation when it was found to be underpowered and suffered from poor manoeuvrability and a low service ceiling, which precluded it from being used in its intended role as a bomber.