It is constructed around a reinforced infantry regiment designated as a regimental combat team (RCT), a composite Marine aircraft group, and a combat logistics regiment (CLR), formerly known as a brigade service support group, all commanded by a battalion-sized command element designated as a MEB headquarters group. The MEB, commanded by a general officer (either a major general or a brigadier general), is task-organized to meet the requirements of a specific situation.
This structure centers around an enhanced infantry battalion designated as an RCT, a composite air unit, and a CLR, formerly known as a brigade support unit, all under the command of a battalion-sized headquarters group. The MEB, led by a high-ranking officer (either a major general or a brigadier general), is designed to respond to specific circumstances.