Carro Armato (armored vehicle) was the Italian Army's designation for tanks from 1938. This would be followed by a letter and a series of numbers. The letter would be either L, M or P meaning light, medium, and heavy tank respectively. The official Italian military tank classification differed from contemporary classifications in other countries. The numbers would follow the pattern of X/Y where X would be the weight in tonnes and Y the year of adoption (i.e. the L6/40 weighs 6 tonnes and was adopted in the year 1940). The following are some Carro Armatos that entered service: