The Fiat-Ansaldo M11/39 was an Italian medium tank first produced prior to World War II. The M11/39 saw service in Africa and Italy (1939–1944). The official Italian designation was Carro Armato (armoured vehicle) M11/39. The designation for the M11/39 is as follows: “M” for Medio (Italian: “medium”), followed by the weight in tonnes (11) and the year of adoption (1939).
Additional Information: en.wikipedia.org/wiki/Fiat_M11/39