This truck was produced by the Italian company Launcher. The 3Ro type is equipped with a five-cylinder diesel engine; it was produced from 1939, and was used for both military and civilian use. It was widely used as a highly reliable heavy-duty truck, and was also supplied to the German Army in 1944. Production continued until 1949. The ammunition truck was developed for anti-aircraft guns that consume a large amount of ammunition; it was also deployed to self-propelled anti-aircraft artillery units.