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4th Law Enforcement Battalion

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4th Law Enforcement Battalion is a United States Marine Corps Reserve law-enforcement unit assigned to the Force Headquarters Group.

Last updated August 26, 2026

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Overview

4th Law Enforcement Battalion is a United States Marine Corps Reserve unit whose designation identifies it as a battalion-level law-enforcement formation. It is listed as a subordinate unit of the Force Headquarters Group, a major subordinate command of Marine Forces Reserve headquartered in New Orleans, Louisiana. The battalion is therefore part of the Marine Corps Reserve command structure rather than a commercial brand or an independent corporation. The available reference material places the battalion among the Force Headquarters Group's subordinate formations. The group was activated on July 18, 2012, following a Force Structure Review Group-directed reorganization intended to improve command and control of force-level Marine Forces Reserve units. Before that realignment, the relevant force-level units reported directly to the commander of Marine Forces Reserve. The reorganization created a dedicated headquarters structure in New Orleans after the relocation of the Mobilization Command from Kansas City made a force-level headquarters group necessary. Publicly available material supplied for this entry does not establish the battalion's original activation date, founding personnel, detailed force composition, specific installations, deployment history, current commanding officer, or operational record. It also does not provide a commercial product portfolio, revenue, market share, or other business information. Its principal organizational role is military law-enforcement capability within the Marine Forces Reserve and the broader Force Headquarters Group structure. As a reserve formation, its personnel and capabilities may support Marine Corps missions when assigned or mobilized, but the supplied sources do not specify particular missions or deployments for this battalion.

History

The 4th Law Enforcement Battalion is identified in the supplied reference material as a subordinate unit of the United States Marine Corps Reserve's Force Headquarters Group. The available material does not provide a separate historical article or a verified activation chronology for the battalion itself, so its institutional history must be described through the command organization in which it is listed. The Force Headquarters Group was activated on July 18, 2012, as a major subordinate command of Marine Forces Reserve. Its creation followed a Force Structure Review Group-directed effort to realign several force-level units under a dedicated headquarters. Before the change, those units reported directly to the commander of Marine Forces Reserve. The reorganization was intended to streamline command and control and improve the effectiveness of force-level management. The relocation of the Mobilization Command from Kansas City to New Orleans contributed to the requirement for a force-level headquarters group in New Orleans. The Force Headquarters Group initially assumed command of six Marine Forces Reserve units: the 3rd and 4th Air Naval Gunfire Liaison Companies, the 3rd and 4th Civil Affairs Groups, the 6th Communications Battalion, and the Intelligence Support Battalion. The group was expected to expand as additional force-structure changes, unit activations, and realignments occurred. The 4th Law Enforcement Battalion is listed among the group's subordinate formations alongside headquarters, civil-affairs, communications, intelligence, air-naval-gunfire liaison, advisor, innovation, reserve-support, deployment-processing, and defensive-cyberspace organizations. The supplied sources do not state when the 4th Law Enforcement Battalion was established, where it is physically based, who has commanded it, or which exercises, deployments, or domestic-support activities it has conducted. They also do not describe its internal companies, personnel strength, equipment, or specific law-enforcement functions. Accordingly, no additional chronology or operational claims are included here. Its documented organizational position is that of a Marine Forces Reserve law-enforcement battalion reporting through the Force Headquarters Group.

  • 2012

    Force Headquarters Group activated

    [1]

    Marine Forces Reserve activated the Force Headquarters Group in New Orleans on July 18, 2012, creating a major subordinate command for force-level units. The 4th Law Enforcement Battalion is listed as one of the group's subordinate formations in the supplied reference material.

Products and positioning

A reserve military law-enforcement capability within the United States Marine Corps and the Force Headquarters Group.

Sources2 sources

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