MOS - Military Occupational Specialty Code

A United States military occupation code, or a Military Occupational Specialty code (MOS code), is a code used in the United States Army and United States Marines to identify a specific job.

Why do people ask about MOS codes?

Service members get asked their MOS quite often in the daily course of business, allowing the other member to get a glimpse of their capabilities and expertise. Knowing other MOS’ helps in building together the best teams for the job at hand.

Some service members are extremely proud of their MOS. For example, you may see many Marines walking around with 0311 tattoos, “Infantry Rifleman” and are proud to represent the “First to Fight” in the Marines.

Many services know a good amount of MOS’ within their military branch. Often times, people pretending to be in the armed forces get stumped by not knowing their MOS, an immediate giveaway because every service member is very aware of them.

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