Editing Lieutenant commander (section)

==United Kingdom==
===Royal Navy===
{{Main|Lieutenant commander (Royal Navy)}}
The insignia worn by a [[Royal Navy]] lieutenant commander is two medium [[gold braid]] stripes with one thin gold stripe running in between, placed upon a navy blue/black background. The top stripe has the ubiquitous loop used in all RN officer rank insignia, except for the rank of Midshipman. The RAF follows this pattern with its equivalent rank of [[squadron leader]].

Having fewer officer ranks than the army, the RN previously split some of its ranks by seniority (time in rank) to provide equivalence: hence a lieutenant with fewer than eight years seniority wore two stripes, and ranked with an army captain; a lieutenant of eight years or more wore two stripes with a thinner one in between, and ranked with a major. This distinction was ostensibly abolished when the rank of lieutenant commander was introduced, although promotion to the latter rank for officers on a full career commission (FCC) was automatic following accumulation of eight years' seniority as a lieutenant. Automatic promotion officially ceased in the early 21st century and promotion is ostensibly now only awarded on merit.

===Royal Observer Corps===
Throughout much of its existence, the British [[Royal Observer Corps]] (ROC) maintained a rank of observer lieutenant commander. The ROC wore a [[Royal Air Force]] uniform and their rank insignia appeared similar to that of an RAF [[squadron leader]] except that the stripes were shown entirely in black. Prior to the renaming, the rank had been known as ''observer lieutenant (first class)''.