Critical Skills Operator / Special Operations Officer
Critical Skills Operators (CSOs) and Special Operations Officers (SOOs) are assigned to billets at the team, company, and battalion levels.
Special Operations Capabilities Specialist
Special Operations Capabilities Specialists (SOCS) are Marines who provide expertise in intelligence, fire support, communications, and canine operations as part of a Marine Special Operations Team.
Combat Service Support
Combat Service Support Marines serve one standard tour with MARSOC in their primary MOS, such as Motor Transport or Logistics.