<P> A United States military occupation code , or a military occupational specialty code ( MOS code ) , is a nine - character code used in the United States Army and United States Marines to identify a specific job . In the United States Air Force , a system of Air Force Specialty Codes ( AFSC ) is used . In the United States Navy , a system of naval ratings and designators was used along with the Navy Enlisted Classification ( NEC ) system : however , on September 29 , 2016 , the United States Navy discontinued enlisted ratings after two hundred and forty - one years of use . Naval service members thereafter were to be referred to solely by their rank and would hold a Navy Operations Specialty ( NOS ) instead of a rate . </P>
<P> A United States military occupation code , or a military occupational specialty code ( MOS code ) , is a nine - character code used in the United States Army and United States Marines to identify a specific job . In the United States Air Force , a system of Air Force Specialty Codes ( AFSC ) is used . In the United States Navy , a system of naval ratings and designators was used along with the Navy Enlisted Classification ( NEC ) system : however , on September 29 , 2016 , the United States Navy discontinued enlisted ratings after two hundred and forty - one years of use . Naval service members thereafter were to be referred to solely by their rank and would hold a Navy Operations Specialty ( NOS ) instead of a rate . </P>
what is the meaning of m o s
what is the meaning of m o s
military occupational specialty
military occupational specialty