What is the corresponding rank for O-7 in the Marine Corps?

The rank corresponding to O-7 in the Marine Corps is Brigadier General. This rank is the first general officer rank and denotes a one-star general. In the United States military, officer ranks are designated by a system that uses a letter "O" followed by a number to differentiate the levels of officer rank.

An O-7 signifies that the officer holds the rank of Brigadier General, which typically indicates a significant level of responsibility and command over a brigade or similar unit, or involvement in broader strategic operations. Understanding this rank is essential in a military context, as it reflects the progression and hierarchy within the Marine Corps and demonstrates the level of leadership and decision-making expected at this rank.