What is the abbreviation for Marine Expeditionary Force?

The abbreviation for Marine Expeditionary Force is indeed MEF. This term refers to a large-scale, combined arms task organization, which is designed for rapid deployment and operation in a variety of combat and non-combat missions. A Marine Expeditionary Force typically consists of a command element, a ground combat element (which is usually a Marine division), an aviation combat element, and a logistics support group, providing it with a balanced capability to engage in independent operations.

The other options represent different components of Marine Corps organization; for instance, MEU stands for Marine Expeditionary Unit, which is smaller than a MEF and focused on similar tasks but in a more limited scope. MEB refers to Marine Expeditionary Brigade, a mid-sized organization that also bridges the gap between a MEU and a MEF, while MAF stands for Marine Air-Focused, which is not a commonly used abbreviation in this context. Understanding these distinctions helps clarify the specific roles and sizes of the various Marine forces.