MOS

Military Occupational Specialty

Every enlisted service member has a specialty code: combat arms, intelligence, communications, medicine, mechanics, cyber, logistics, and many more. Army MOS codes are 3-character alphanumeric (e.g., 11B = Infantry Rifleman). Marine MOS codes are 4-digit numeric (e.g., 0311 = Rifleman). MOS is determined at MEPS based on ASVAB line scores, medical profile, security clearance eligibility, and current branch openings.