18 - Tank Assault Amphibious Vehicle and Amphibious Combat Vehicle
The Tank, Assault Amphibious Vehicle, and Amphibious Combat Vehicle occupational field includes operation, employment, maneuver, and maintenance of tracked vehicles in the combined arms environment during both amphibious assaults and subsequent land operations ashore.
Qualifications required include basic mechanical aptitude and the ability to perform harmoniously with others in the confined area inside combat vehicles. The duties involved are incident to the operation, employment, maneuver, and maintenance of tanks and assault amphibious vehicles. Formal schooling is provided to Marines at both the entry level and at the appropriate time in career development. After entry into occupational field 18 and assignment of a basic 1800 MOS, personnel specialize in either the M1A1 Tank or the Assault Amphibious Vehicle.