Which rank corresponds to O-6?

The rank that corresponds to O-6 is notably Captain in the Navy and Colonel in the Army, Air Force, and Marine Corps. At the O-6 level, these ranks are significant as they represent senior officers who are experienced leaders in their respective services. Captains and Colonels typically command large units and play critical roles in planning and executing missions, and they are often responsible for the training and welfare of their subordinates.

While other options include higher ranks, such as Rear Admiral (Upper Half) and Fleet Admiral, these correspond to levels above O-6. Similarly, Admiral and General represent even higher ranks within the military hierarchy. Understanding these distinctions is essential for recognizing the structure of military rankings and the responsibilities that come with each level.