The United States Marine Corps Military Occupational Specialty (MOS) 4100 is Basic Marine Corps Community Services Marine. Marine Corps Community Services (MCCS) is a set of programs that support Marines, their families, retirees, and civilians. MCCS Marines are responsible for many duties, including providing customer service and support.
To join the Marine Corps, you must meet the following requirements:
Be a U.S. citizen or resident alien
Be between the ages of 17-29
Have a high school diploma
Pass the Armed Services Vocational Aptitude Battery (ASVAB) test
Pass a Military Entrance Processing Station medical exam
Meet physical, mental, and moral standards
To qualify for MOS 4133, you must:
Have a GT score of 110 or higher
Be interviewed by a 4130/4133
Have six months of MOJT