As a member of a field artillery howitzer battery, cannoneers prepare artillery pieces and equipment for movement, combat, and firing. They inspect and prepare ammunition for firing, and perform the various jobs incident to firing such as, laying for elevation and deflection, loading the piece, and handling ammunition. Field artillery cannoneers perform preventive maintenance and clean artillery pieces and equipment. They make routine tests and authorize repairs to equipment. Camouflage position, protect equipment from chemical warfare agents, and construct field fortifications.

As a member of a HIMARS battery, operators prepare the HIMARS for movement, combat, and firing. They inspect and prepare the launcher system for employment to include movement to and from concealment positions and firing positions, operate the fire control systems, and handle multiple launch rocket system (MLRS) family of munitions (MFOM). HIMARS operators perform preventative maintenance and clean system components. They make routine tests and authorized repairs to HIMARS. They provide security, camouflage positions, and protect HIMARS from chemical warfare agents. This MOS will be assigned by the CMC (MM).

Field artillery radar operators perform the entire duties required for emplacement, orientation, and operation of field artillery radar equipment. They prepare the radar equipment, power generator and associated equipment for movement and operation, lay communications wire, install and operate field telephones, perform preventive maintenance, construct field fortifications, and camouflage and protect the equipment position. Upon promotion to staff sergeant and appropriate formal schooling, the 0842 will be designated MOS 0848.

Field artillery fire control men perform duties essential to the delivery of accurate artillery fire to include position survey and fire direction computation. Typical duties include preparation of fire control equipment for movement and operation, performance of detailed survey operations, performance of preventive maintenance, routine testing, authorized minor repairs to survey and fire control equipment, and operation of field communications equipment. Fire control computation includes the use of computer equipment systems, plotting survey data on firing charts, determination of target coordinates, and the conversion to target coordinates and observer's reports into firing data and commands. MOS 0844 is assigned upon completion of formal school. Upon promotion to staff sergeant and the appropriate formal school, the 0844 will be designated MOS 0848.

Artillery meteorological men assist in the delivery of accurate artillery fire by observing weather conditions and computing and distributing weather data for use in field artillery and mortar fire control. Duties include preparing weather observation equipment, measuring surface observations, obtaining atmospheric readings at various altitudes by pilot balloon observations, radiosonde soundings, and numerical meteorological modeling. Other duties include performing preventive and corrective maintenance instruments and equipment. Upon promotion to staff sergeant, and completion of formal schooling, MOS 0847 will be redesignated as MOS 0848.

Field artillery operations men perform the various duties associated with the operation of a field artillery and mortar fire direction center; operations or training section; survey section; meteorological section; or target acquisition radar section. Duties include preparing personnel and equipment for movement and operation; assisting in location of fire direction center or target acquisition radar in the field; maintaining a situation map, operations journal, and survey records; performing duties incident to the preparation, reproduction, and distribution of operations orders, training orders, memoranda, schedules, status reports, and S-3 periodic reports; preparing operations maps and overlays; assisting in the establishment and operation of artillery meteorological stations, direct atmospheric meteorological observation interpreting, evaluating and distributing atmospheric data; performing duties incident to execution of survey plans essential to proper employment of field artillery; assisting in installation, orientation, operation, and maintaining target acquisition radar equipment; and training personnel in radar, meteorological, survey, and fire direction procedures.

Fire support men perform duties incident to the planning, observation, conduct, and control of artillery and naval gunfire. These duties include planning, calling for, integrating, coordinating, observing and adjusting artillery (cannon, rocket, missile) and NSFS, employment of LASER designators, range finders, and LASER guided munitions and coordination of lethal and non-lethal fire support assets to include mortars, artillery (cannon, rocket, missile), NSFS, Fixed and Rotary wing CAS.

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