Field 15 in the army is avation. The A years ago was an OJT (On the Job Training) or student in that speciality, others had a letter for the speciality followed by a 1. The number 1 level or rank. The "R" I have not seen before a "P" in that position was parachute qualified. Examples: 76Y10 = Unit Supply OJT, 76Y20 Unit Supply (qualified), 76Y30 Unit Supply (Armorer), 76Y40 Unit Supply (SGT). The field numbers have changed since then, now 92Y is Unit Supply. See the link for more info.
Military Occupational Specialty. Specifies what your function in the military will be.
MOS is an acronym for Military Occupational Specialty...or job specialty.
It Stands for Military Occupational Specialty. In other words, it's your "Job" in the Marine Corps. This defines you and what you do. For example, If you go into 0311 infantry, you have succeeded as a Rifleman.
MOS, military occupational specialty
Depends on what branch of military your joining, your military occupational specialty, and your resident geographic location.
Military Occupational Specialty, the equivalent of a job title or description in civilian life.
MOS Military Occupational Specialty
In the US Army 91B is a wheeled vehicle mechanic.
The cast of Military Occupational Specialty 21S Topographic Surveyor - 1999 includes: Julio Toala Juergen Werner Tiffany Wiggins
The Military Occupational Specialty or MOS for a cook in the US Marines is 3381 ~ see related link below .
Cartographic Draftsman (20th Engineer Btn.,Vietnam 1970)
Soldiers are assigned by need and MOS (Military Operating Specialty).