GUN CREWMAN, COAST ARTILLERY (608)
Ammunition Chief, Gun Commander, Cannoneer, Gun Pointer
Chief of Breech, Gunner, Fuze Setter, Range Setter

As a member of a Coast Artillery gun crew of major caliber, assists in operating a fixed, semifixed, or railway artillery piece to bring fire to bear against enemy seacraft in coastal frontier defense waters.

GUN CREWMAN, HEAVY ARTILLERY (845)
Ammunition Handler
Gunner
Ammunition Noncommissioned Officer
Cannoneer

As crew member of a 240-mm howitzer or 8-inch gun, or heavier caliber artillery gun or howitzer using separate loading ammunition, assists in moving, emplacing, firing, and withdrawing the piece in combat operations.

GUN CREWMAN, LIGHT ARTILLERY (844)
Ammunition Handler
Ammunition Noncommissioned Officer
Cannoneer
Gunner
Infantry Cannon Crewman

As a member of a 75-mm howitzer, 1O5-mm howitzer or gun artillery crew using fixed or semifixed ammunition, assists in moving, emplacing, firing, displacing, and withdrawing the piece in combat operations.

GUN CREWMAN, PACK ARTILLERY (1531)

Ammunition Handler
Ammunition Noncommissioned Officer
Cannoneer
Gunner

As a member of a 75-mm pack artillery gun crew, assists in disassembling, moving, assembling, emplacing, firing, and withdrawing piece in combat operation over terrain where other types of field artillery cannot maneuver.

HEAVY MACHINE GUNNER (605)
Ammunition Bearer
Antiaircraft Machine Gunner
Machine Gun NCO

Loads, aims, cleans, maintains, and fires heavy machine gun to provide automatic direct or indirect fire in support of other tactical units breaking through enemy defense, harassing enemy troops and positions, and in defense against enemy aircraft, light armored vehicles, and enemy counterattack.

HEAVY MORTAR CREWMAN (1607)

As member of 81-mm or 4.2-inch mortar crew, sets up, aims, and fires weapon from carrier or ground mount, to place explosive, toxic gas, shells, or smoke on enemy positions.

HEAVY WEAPONS NONCOMMISSIONED OFFICER (812)

Supervises activities of a heavy weapons unit, comprising heavy (.30 and .50 caliber) machine guns and heavy (81-mm and 4.2-inch) mortars to provide fire power in support of other tactical units in attack and defense.

HEIGHT FINDER OBSERVER (692)

Operates a large horizontal base stereoscopic range finder in the range section of a seacoast or antiaircraft artillery battery to determine distances in yards to fixed points, enemy seacraft, and enemy aircraft.