OccFld includes the employment of Signals Intelligence (SIGINT), Electronic Warfare (EW), Computer Network Operations (CNO), and communications systems, facilities, and personnel. Marines in this field conduct collection, analysis, production, and dissemination of collected data and intelligence. Marines entering the SIGINT/EW field will be required to set up and operate communications and/or electronic equipment, prepare reports, conduct preventive maintenance on assigned equipment, and assist in the operational control and management of SIGINT/EW personnel, equipment, and facilities. Entry-level jobs include Special Communications Signals Intercept Collection Operator, Electronic Intelligence (ELINT) Intercept Operator, Special Intelligence System Administrator/Communicator, or Cryptologic Linguist. Marines can also enter the SIGINT field at the grade of corporal or sergeant. Duty assignments are made to Marine Cryptologic Support Battalion, Radio Battalions, Intelligence Battalions, the Air Wing VMAQs, the Special Security Communications Teams (SSCTS), and the staff sections of the Marine divisions and wings. All personnel are expected to become familiar with information Operations/Information Warfare, support to intelligence computerized networks, and Marine tactical SIGINT/EW operations to include: electronic attack (EA) electronic protect (EP), electronic support (ES), and radio direction-finding functions. These skills may be obtained through formal training or on-the job training and should be acquired prior to obtaining the grade of gunnery sergeant.
Below are the Marine Corps Enlisted Military Occupation Specialties which are organized under this occupational field:
2611 --Cryptologic Digital Network Technician/Analyst
2621 --Special Communications Signals Collection Operator
2629 --Signals Intelligence Analyst
2631 --Electronic Intelligence (ELINT) Intercept Operator/Analyst
2651 --Special Intelligence System Administrator/Communicator
2671 --Middle East Cryptologic Linguist
2673 --Asia-Pacific Cryptologic Linguist
2674 --European I (West) Cryptologic Linguist
2676 --European II (East) Cryptologic Linguist
2691 --Signals Intelligence/Electronic Warfare Chief
