Séré de Rivières system
Approximately 1,400 pieces of 155 L were built in the 19th century. Most were placed in France's numerous fortresses of the time (part of the Séré de Rivières system), most notably at Toul, Belfort, and Verdun. In 1882, about 200 pieces of 155 L were retained for offensive operations as siege artillery. In this role, each 155 L gun was drawn by ten horses.