What is the largest Marine Air Ground Task Force?

The correct answer is that the largest Marine Air Ground Task Force is the Marine Expeditionary Force (MEF). The MEF represents the most powerful and comprehensive level of a Marine Air Ground Task Force, encompassing a large number of Marines and supporting units that can effectively conduct a broad spectrum of operations.

A MEF is composed of a command element, a ground combat element (often a division), an aviation combat element (usually a wing), and a logistics combat element. This structure allows for a well-rounded and capable force that can operate independently or as part of a larger joint or combined force in various combat and humanitarian scenarios.

The other options represent smaller units within the Marine Corps operational structure. A Marine Expeditionary Battalion (MEB) is smaller than a MEF, comprising fewer troops and units. A Marine Amphibious Force refers to an older designation that has largely been replaced by the MEF, while a Marine Expeditionary Unit (MEU) is a smaller, more agile force designed for quick-response operations. These distinctions highlight why the MEF stands out as the largest and most capable task force within the Marine Corps.