The Italian designation system for tanks consisted of a letter (L, M or P; designating light, medium and heavy tanks respectively) followed by two numbers: one giving the approximate weight in tons, the other giving the year it was accepted for service.
The Italian definitions of light, medium and heavy tank differ from other nations at the time.
During World War II, Italy regularly mounted cannons on portee trucks.
Also, permanent installation of guns on trucks and armored cars were done on ad-hoc basis, therefore many self-propelled guns had no official name besides descriptive type of truck plus type of cannon.
Italian Army and Navy have deployed a network of radar detectors and jammers though.