Marine Corps Military Occupational Specialty

A Marine Corps Military Occupational Specialty (MOS) is a specific job or role assigned to individual Marines, similar to a military 'career specialty.' It defines their training, skills, and responsibilities, such as being an infantryman, mechanic, or communications specialist. Each MOS ensures Marines are trained for particular duties essential to mission success. The designation helps organize personnel, facilitate career progression, and identify qualifications. Overall, an MOS is the specialized occupation a Marine performs within the Corps, aligning their abilities with the needs of the military.