In the Army, what rank corresponds to O-6?

The rank that corresponds to O-6 in the Army is Colonel. This rank is significant as it denotes a senior level of leadership within the Army structure, typically overseeing large units, such as brigades or similar organizations. Colonels are responsible for commanding substantial forces and may also serve in key staff positions.

In the military rank structure, the designations of major, lieutenant colonel, and brigadier general correspond to lower and higher ranks, respectively. A major is ranked as O-4, a lieutenant colonel is O-5, and a brigadier general is O-7. Understanding this ranking system is crucial for recognizing the hierarchy and responsibilities associated with each rank within the Army, and it is essential for operational command and control.