A Major in the Marine Corps is equivalent to what rank in the Navy?

A Major in the Marine Corps is equivalent to a Commander in the Navy. The rank structure between the two services parallels one another, with both branches having a clear progression of ranks. A Major is a field grade officer, and in the Navy, the rank that occupies a similar organizational and command role is the Commander.

The rank of Lieutenant Commander in the Navy is a junior officer rank that is one level below the Commander, making it an improper comparison to the role and responsibilities of a Marine Corps Major, which aligns more closely with that of a Navy Commander. Captain is another rank in the Navy that is equivalent to a Major in terms of paygrade, but it designates a different level of command and operational responsibility. Rear Admiral is a flag officer rank and therefore not comparable to a Major or Commander level.

Hence, the position of Major in the Marine Corps corresponds directly with Commander in the Navy, illustrating the structured equivalency of ranks across the military branches.