What is the rank of O-9 in the Marine Corps?

In the Marine Corps, the rank of O-9 is designated as Lieutenant General. This rank is three stars and typically commands a major subordinate command within the Marine Corps, such as a division or a corps, and may also serve in significant roles at the operational or strategic level.

Understanding the rank structure is essential for military personnel, as it helps clarify roles, responsibilities, and the hierarchy within the organization. Each rank not only delineates authority but also experience and qualifications necessary for leadership positions within the forces.

In contrast, the other ranks mentioned serve different roles within the hierarchy: a Major General (O-8) is one star, a Colonel (O-6) is a senior field officer who typically commands a regiment or brigade, and a Brigadier General (O-7) is one star, serving just below a Major General. Hence, while all these ranks are significant, they belong to different levels of seniority within the Marine Corps ranking system.