Lieutenant commander

A Lieutenant Commander is a senior department officer on a large ship or installation. They may also be Commanding officer or executive officer (second-in-command) of a smaller ship or installation. Lieutenant Commander is a commissioned officer rank in the UNSC Navy superior to a Lieutenant and subordinate to a Commander. The corresponding rank in the Marine corps is Major.

Known Lieutenant Commanders

 * Lieutenant Commander Fhajad SPARTAN-084
 * Lieutenant Commander Gail Purdy
 * Lieutenant Commander J. G. Ortega
 * Lieutenant Commander Julian Waters
 * Lieutenant Commander Xaing Cho