Army Careers – Field Artillery Firefinder RADAR Operator 13R – Military Occupational Specialties (MOS)


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