They are based at MCB Camp Foster and fall under the command of Marine Air Control Group 18 and the 1st Marine Aircraft Wing.

Although a subordinate squadron of MACG-18, MWCS-18 is considered a 1st MAW asset and therefore serves to augment the entire 1st Marine Air Wing with communications support.

Provide expeditionary communications for the deployed Aviation Combat Element (ACE) and Command Element (CE) of the Marine Expeditionary Force (MEF) and its supporting Marine Air Command and Control System (MACCS) including the phased deployment of task-organized elements thereof.

~Alpha Company ~Bravo Company ~Headquarters and Support Marine Wing Communication Squadron 18 (MWCS-18) was activated 1 September 1967 at Danang, Republic of Vietnam, as Marine Wing Communications Squadron 1 (MWCS-1), Marine Wing Headquarters Group 1, 1st Marine Aircraft Wing.

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