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In the heat of combat, speed and accuracy are vital when locating and eliminating enemy fire.  

To detect enemy fire and alert field artillery units to critical targeting information, the Army relies upon the specialized skills of the Field Artillery Firefinder Radar Operator.     

Candidates for this MOS should have an interest in radar and electronics, have skills in math and geometry, and be able to maintain focus under pressure.    

After successful completion of Basic Combat Training, you will attend 10 weeks of Advanced Individual Training at the Field Artillery School at Fort Sill, Oklahoma. 

Where you will learn the basics of radar and object identification, calculating and recording speed, direction, and altitude, field tactics and combat communications, and to operate the Firefinder radar equipment.      

After successful completion of training, you may deploy as a team member of a tactical unit, where you may be responsible for preparing, operating, and maintaining the Firefinder radar and other systems;  Establishing and maintaining radio communications; And constructing fortifications and field artillery emplacements.    

The skills, discipline, and leadership experience gained by serving in this MOS may help in your transition to a civilian career.      

An essential part of Army Field Artillery operations. Providing critical support to infantry and tank units in the battlefield. Military Occupational Specialty: Field Artillery Firefinder Radar Operator. The King of Battle. 

Field Artillery Firefinder RADAR Operator (13R)

  • Enlisted
  • Officer
  • Active Duty
  • Army Reserve
  • National Guard
  • Entry Level


The field artillery firefinder radar operator is responsible for detecting enemy forces and alerting the units in the Army. Using a “firefinder” — which are highly specialized radars — they can detect various objects and their locations.

Job Duties

  • Operate firefinder radar and other systems
  • Establish and maintain radio and wire communications
  • Construct bunkers and similar areas for other field artillery
  • Maintain firefinder radar with scheduled checkups


Those who want to serve must first take the Armed Services Vocational Aptitude Battery, a series of tests that helps you better understand your strengths and identify which Army jobs are best for you.


Job training for a field artillery firefinder radar operator requires 10 weeks of Basic Combat Training and eight weeks of Advanced Individual Training with on-the-job instruction. Part of this time is spent in the classroom and also partly on firefinder equipment.

Some of the skills you’ll learn are:

  • Operating firefinder equipment
  • Basic workings of radar and identifying objects
  • Field tactics and combat communications
  • Calculating/recording speed, direction and altitude

Helpful Skills

  • Interest in radar and electronics
  • Skills in geometry and math
  • Ability to maintain long periods of focus

Required ASVAB Score(s)

Surveillance & Communications (SC): 98

Learn more about the ASVAB and see what jobs you could qualify for.


Total compensation includes housing, medical, food, special pay, and vacation time. Learn more about total compensation.

Earn Cash For In Demand Jobs

You could earn up to $40,000 in cash bonuses just for enlisting under certain Military Occupational Specialties. Visit Jobs in Demand to see if this job qualifies for an enlistment bonus.

Education Benefits

In the Army, qualified students can earn full-tuition, merit-based scholarships, allowances for books and fees, plus an annual stipend for living expenses. Learn more about education benefits.

Future Civilian Careers

While there is no direct job equivalent in civilian life, the skills you learn such as teamwork, discipline and leadership will help you in any civilian career you choose.


Those interested in this job may be eligible for civilian employment, after the Army, by enrolling in the Army PaYS program. The PaYS program is a recruitment option that guarantees a job interview with military friendly employers that are looking for experienced and trained Veterans to join their organization. Find out more about the Army PaYS Program at


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