Lancia 3Ro

The Lancia 3Ro was a 4x2 heavy truck and the best known of a family that also included the Ro and the Ro-Ro, built by Lancia from the 1930s into the 1940s for military and civilian use. The Ro began in 1933 and was the first Italian truck with a four-speed gearbox, using a Junkers-licensed opposed-piston two-stroke diesel; the 3Ro, built from 1938 to 1947 according to the article lead, replaced the two and three-cylinder engines with a five-cylinder diesel of 6,875 cc giving 93 hp, and added pneumatic tires and a better transmission. It was one of the main heavy trucks of the Royal Italian Army in the Second World War and served in every theatre, and German forces ordered 772 built between January 1944 and February 1945. Civilian petrol and gas versions and coach chassis were also made, and the Esatau superseded it. The last 3Ro was retired from Italian Army service in 1964.