Captain (ground forces)

Captain(Marine) is a rank of commissioned officers that is a ranked above a First Lieutenant and below a major. The ground based military rank of captain is ranked three steps lower than a naval captain, and has no special authority with respect to a ship a marine captain is just another passenger or crew member while on board.

Captains in the Marine Corps generally command and control company-sized units (62 to 190 Soldiers), together with a principal Non-commissioned officer assistant.

the Marine Captain is the equivalent to a Navy Lieutenant.

looking for the navy rank of Captain

{This Rank has not yet been mentioned in the Halo Universe}