The Cadillac Gage Commando is a 4x4 amphibious armored car built by the American firm Cadillac Gage. The vehicle has been outfitted for many roles, including armored personnel carrier, ambulance, fire apparatus, anti-tank vehicle, and mortar carrier. They saw service in the Vietnam war where it became known as the Duck, or the V. It was also supplied to many US allies, including Lebanon and Saudi Arabia which used them in the first major ground engagement of the 1991 Gulf War. No longer produced, it has been largely replaced by the M1117 Armored Security Vehicle which was developed as tougher alternative to up-armored Humvees.