What is the smallest type of Marine Air Ground Task Force?

The Marine Expeditionary Unit (MEU) is the smallest type of Marine Air Ground Task Force (MAGTF). A MEU is a reinforced battalion task force organized for amphibious operations and typically consists of a command element, a ground combat element, an air combat element, and a logistics combat element. This structure allows the MEU to operate effectively across a broad spectrum of military operations, including crisis response, humanitarian assistance, and combat missions.

The MEU is designed for swift deployment and is usually on standby for rapid response, making it a key asset in the Marine Corps' capability to project power and provide support in various scenarios. Its smaller size compared to a Marine Expeditionary Force (MEF) or Marine Expeditionary Brigade (MEB) allows for greater agility and the ability to operate in environments that are not conducive to larger forces. The Marine Littoral Regiment (MLR), while a new type of unit with a different focus, does not pertain directly to the MAGTF structure in the context of size hierarchy.