Which units fall under the designation of F/AD IV?

The designation F/AD IV refers specifically to the Marine Forces Reserves (MFR) units and training bases. These units are integral to the Marine Corps structure and are often involved in training and readiness preparation.

The Marine Forces Reserves serve as a reserve component that can be called upon to support active-duty forces when necessary. They undergo training to maintain a high level of readiness, ensuring they can be deployed swiftly in times of need, which is aligned with the F/AD IV classification. This classification emphasizes the unique role these units play in providing support and augmenting active-duty forces, particularly during mobilization or emergencies.

Understanding the role of MFR units and training bases helps clarify their importance within the larger organizational framework of the Marine Corps and specifically highlights their operational responsibilities compared to other unit types, such as logistics or support units, which may not fit the F/AD IV designation directly.