Editing Lieutenant commander (section)

==United States==
{{Main|Lieutenant commander (United States)}}
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 Oceanic and Atmospheric Administration Commissioned Officer Corps]].

Within the U.S. Navy, lieutenant commanders are listed as [[junior officers]]. There are two insignia used by U.S. Navy and U.S. Coast Guard lieutenant commanders. On service khakis and all working uniforms, lieutenant commanders wear a gold oak leaf collar device, similar to the ones worn by [[Major (rank)|major]]s in the [[United States Air Force]] and [[United States Army]], and identical to that worn by majors in the [[United States Marine Corps]]. In all dress uniforms, they wear sleeve braid or shoulder boards bearing a single gold quarter-inch stripe between two gold half-inch strips (nominal size). Above or inboard of the stripes, they wear their speciality insignia (i.e., a star for officers of the line, single oak leaf for medical with silver acorn for Medical Corps, crossed oak leaves for [[Civil Engineer Corps]], United States shield for the Coast Guard, etc.) The [[Uniformed Services of the United States]] designate the rank as O-4.<ref>{{cite web|url=http://www.defenselink.mil/prhome/poprep2000/html/chapter4/chapter4_2.htm|title=United States Department of Defense |website=www.defenselink.mil |access-date=8 May 2018 |url-status=live |archive-url=https://web.archive.org/web/20041230015239/http://www.defenselink.mil/prhome/poprep2000/html/chapter4/chapter4_2.htm |archive-date=30 December 2004}}</ref>