In the United States, the rank of lieutenant commander exists in the United States Navy, United States Coast Guard, United States Public Health Service Commissioned Corps, and National …

Sep 11, 2025 · Lieutenant Commander (LCDR, O-4) LCDRs often serve as department heads or executive officers on ships, submarines or aviation squadrons.

On this page you can learn more about a Lieutenant Commander's payscale, the process of becoming a Lieutenant Commander, and the history of the rank in the United States Navy.

Lieutenant Commander is the fourth commissioned officer's rank in the U.S. Navy, and is equivalent to the rank of Major in the other Armed Services. Lieutenant Commanders typically …

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In the United States Navy and Coast Guard, as well as several Commonwealth navies, a lieutenant commander is a senior commissioned officer, typically responsible for increasingly …

The meaning of LIEUTENANT COMMANDER is a commissioned officer in the navy or coast guard ranking above a lieutenant and below a commander.

A lieutenant commander is a senior department officer on a large ship/shore installation or commanding officer or executive officer (second-in-command) of a smaller ship/installation.

Simply "lieutenant" is never used because it is one rank lower. Promotion to lieutenant commander in the U.S. Navy is governed by United States Department of Defense policies …

May 13, 2014 · Shortly after 1775 a senior Lieutenant who was "Captain" of a smaller, 10- to 20-gun warship was called a Lieutenant Commanding, sometimes Lieutenant Commandant.