0842 vs 0847
Field Artillery Radar Operator (USMC) vs Field Artillery Sensor Support Marine (USMC)
Both went to Parris Island or San Diego. Everything since has been a choose-your-own-adventure book with no good options.
On one end of the military experience spectrum, 0842: the concept is legitimately satisfying — detect an incoming round, compute where it came from, radio that grid to the gun line, and watch counter-battery fires solve the problem. On the opposite end, 0847: now you own the quality control function for every fire mission that comes through the FDC — if a round goes where it shouldn't, the investigation will start with your operations chief. The spectrum is wider than the career counselor implied. The spectrum is always wider than the career counselor implied. Two branches that, despite joint doctrine, remain convinced the other one is doing it wrong.
After the Uniform
The part the recruiter skips: what each job actually translates to once you're a civilian — and what it pays.
Salary data from the U.S. Bureau of Labor Statistics Occupational Employment and Wage Statistics program. A guide, not a guarantee.
Recruiter vs. Reality
The pitch versus what people who actually did the job report back.
“You'll operate the AN/TPQ-46 Firefinder radar — the system that watches incoming rounds arc through the sky and works backwards to find the gun that fired them. Counter-battery radar is one of the most technically demanding jobs in Marine artillery, and the data you generate drives fire missions that silence enemy indirect fire. Marines who master this have a skill that doesn't exist anywhere else in the world.”
You will become best friends with a radar van that is temperamental in good weather and genuinely hostile in the field. The concept is legitimately satisfying — detect an incoming round, compute where it came from, radio that grid to the gun line, and watch counter-battery fires solve the problem. In practice, you spend a significant portion of your career doing system checks, calibrations, and maintenance on equipment that requires constant attention. You'll live with the artillery battery, which means you share their schedule: gun missions at 0200, field operations in mud, the full artillery experience without getting to pull a lanyard. The technical troubleshooting skills are real and transfer to radar maintenance and electronic systems careers on the outside, but it takes some deliberate resume translation to make that clear to civilian employers.
“You'll run the fire direction center for a Marine artillery battalion — the operation that turns fire requests into accurate rounds on target. The artillery operations chief is the technical authority for fire direction in the battalion, responsible for the precision that keeps friendly forces alive and enemy forces suppressed. It's the pinnacle of enlisted artillery expertise.”
You have spent a career in artillery developing the technical depth and the tactical judgment that a battalion fire direction center requires. Now you own the quality control function for every fire mission that comes through the FDC — if a round goes where it shouldn't, the investigation will start with your operations chief. The AFATDS expertise, the survey requirements, the meteorological data requirements, and the integration of multiple firing units into a coherent firing battery are all your domain. Post-military, the analytical precision and technical operations management experience translate to defense contractor positions supporting artillery systems programs, and to federal government fire control program management roles.
The Real Life
Same dimensions, side by side. 0842 on the left, 0847 on the right.
Operating and maintaining counter-battery radar systems (AN/TPQ-36 and AN/TPQ-37), tracking incoming fire, computing enemy firing positions, and providing target data to fire direction centers. The work is technical and requires attention to detail. Garrison time includes equipment maintenance, calibration, and training exercises.
—
The Field Artillery Radar Operator Course at Fort Sill (OK) covers radar theory, operation, and maintenance. About 12 weeks and heavily technical — electronics, signal processing, and fire support coordination. Fort Sill is isolated but the training is solid. You'll be with Army students in the same pipeline.
—
Moderate to high. Operating radar systems involves physical setup and breakdown in field conditions, plus standard Marine Corps physical requirements. The equipment is heavy and must be emplaced and displaced rapidly.
—
The 0842 is one of the more technical MOSs in the artillery field and most recruiters couldn't explain it if they tried. You operate radar systems that detect incoming fire and calculate where it came from — essentially telling the cannoneers where to shoot back. The work is genuinely interesting if you like electronics and applied math. The downside: it's a small community with limited billets, which means promotion can be unpredictable. The civilian translation is actually decent — radar operators, electronics technicians, and systems operators are in demand in defense, aviation, and weather services. Just don't expect anyone outside the military to know what a counter-battery radar is.
—
Recent Reviews
Community Takes
Be the first to share your take on 0842 vs 0847
Compare Other MOS
Search by code or title, or browse by branch