Lance sergeant
Lance sergeant (LSgt or L/Sgt) is an appointment in the armies of the Commonwealth and formerly also a rank in the United States Army.
Commonwealth
Lance-sergeant in the armies of the Commonwealth was an appointment given to a corporal so they could fill a post usually held by a sergeant. The appointment is retained now only in the Foot Guards and Honourable Artillery Company in the British Army. In these regiments today, all corporals are automatically appointed lance sergeant on their promotion, so lance sergeants perform the same duties as corporals in other regiments and are not acting in place of sergeants. The Household Cavalry equivalent is lance-corporal of horse.
The appointment originated in the British Army and Royal Marines, in which it could be removed by the soldier's commanding officer, unlike a full sergeant, who could only be demoted by court martial. Lance-sergeants first appeared in the 19th century. The appointment was abolished in most regiments and corps in 1946. Some cadet units also retained the rank in addition to corporal into at least the 1980s.