The Army and Marine Corps call their enlisted job specialities, "MOS's," or "Military Occupation Specialties.
Below are the Army MOS's that fall into the Field Artillery Field:
13B -Cannon Crewmember
13C - Tactical Automated Fire Control Systems
13D - Field Artillery Automated Tactical Data Systems Specialist
13E - Cannon Fire Direction Specialist
13F - Fire Support Specialist
13M - Multiple Launch Rocket System Crewmember
13P - Multiple Launch Rocket System Automated Tactical Data Systems Specialist
13R - Field Artillery Firefinder Radar Operator
13S-Field Artillery Surveyor
13W-Field Artillery Meteorological Crewmember
13X-Field Artillery Enlistment Option
