Radio Battalions are tactical signals intelligence units of Marine Corps Intelligence. There are currently three operational Radio Battalions in the Marine Corps organization: 1st, 2nd, and 3rd. In fleet operations, teams from Radio Battalions are most often attached to the command element of Marine Expeditionary Units.

The Marine Corps Intelligence is the intelligence arm of the United States Marine Corps (USMC) and an element of the United States Intelligence Community. The Director of Intelligence supervises the Intelligence Department of HQMC and is responsible for policy, plans, programming, budgets, and staff supervision of Intelligence and supporting activities within the U.S. Marine Corps as well as supervising the Marine Corps Intelligence Activity (MCIA). The department supports the Commandant of the Marine Corps (CMC) in his role as a member of the Joint Chiefs of Staff (JCS), represents the service in Joint and Intelligence Community matters, and exercises supervision over the MCIA.