The headquarters of a Marine Division includes which main component?

The headquarters of a Marine Division primarily includes the Headquarters Battalion, which is essential for the organization and command of the division. The Headquarters Battalion serves as the central node for the division's command and control, providing essential support functions such as administration, logistics, and communication. This battalion is critical for coordinating the various elements of the division, including infantry, artillery, and support units, ensuring that all pieces work harmoniously toward the division's mission.

In contrast, while Combat Logistics is vital for sustaining operations, it is a separate component focused on logistical support rather than the command structure. The Amphibious Operations Group specializes in conducting amphibious operations but is not considered a core part of the division's headquarters setup. Field Artillery, while a significant combat arm within the division, operates under separate battalions and does not contribute to the administrative and operational management functions of the division's headquarters. Therefore, the Headquarters Battalion stands out as the main component that defines the organizational structure at the divisional headquarters level.