What do the letters after the numbers mean in the U.S. Army's MOS codes stand for?

Answer 1

The US Army assigns a nomenclature to everything Army related, from manuals to uniforms and equipment, to the job descriptions (MOS's). The Number of the MOS designates the the Career Management Field (CMF). For instance: soldiers who have the CMF 13 are Field Artillery. The letter after the number designates a more specific job title. A 13A is a Field Artillery Officer, a 13B is a Cannon Crew Member, a 13C was a Tactical Automated Fire Control Systems Specialist but that MOS no longer exists. This continues to 13Z which is a Field Artillery Senior Sergeant. There are additional number and letter groups following the three digits of the initial MOS that designate more and more specific job descriptions.

For instance: in the 1980's the MOS 15E.

* 15E was the designation of a Pershing Missile Crewman. * 15E10 was the designation of a Pershing Missile Crewman of enlisted rank E-1 to E-4. * 15E10Y1 was the designation for a Pershing Missile Creman of enlisted rank E-1 to E-4 who had graduated from Pershing II Missile Training School.