Regulatory as Light Infantry and Cavalry Mortar, by circular order of September 6, 1932. It was designed by Mr. Vicente Valero and manufactured by Ecia. Thanks to its structure and the possibility of being folded, it became, as of 1932, an ideal weapon to equip companies of Infantry, Cavalry and Security units with a curved shot weapon, which completed the fire of the rifles. machine gunners. The original model weighed 7 kg., With a maximum range of 1000 m. and its ammunition had a range of 30 meters. A trained crew could fire up to 16 shots in one minute. This mortar had an excellent design, in fact it is the father of all commando mortars and was adopted by the British Army as a two inch mortar and used throughout World War II.