[@shylarah] [@oak7ree]
Lance corporal (LCpl or formerly L/Cpl) is the lowest ranking non-commissioned officer in the British Army and Royal Marines, between private and corporal (although officially with a NATO grade of OR3, due to them having the same battlefield role of Fire-Team commander as a US Sergeant are often treated as OR5's when working with the US Army). The badge of rank is a one-bar chevron worn on both sleeves, or on an epaulette on the front of the Combat Soldier 95 dress standard (although lance corporals in the Foot Guards, Honourable Artillery Company, 1st The Queen's Dragoon Guards and The Queen's Royal Hussars wear two-bar chevrons and in the Household Cavalry a two-bar chevron surmounted by the crown is worn). The Royal Artillery uses the term lance-bombardier instead. The designation "chosen man", used during the Napoleonic Wars, was a precursor to the rank. A common nickname for a lance corporal is "lance jack". Lance corporals are commonly addressed as "corporal".

Until 1 September 1961, lance corporal and lance bombardier were only appointments rather than substantive ranks, given to privates who were acting NCOs, and could be taken away by the soldier's commanding officer (whereas a full corporal or bombardier could only be demoted by court martial).[6] The Royal Engineers and Army Ordnance Corps also used the similar rank of second corporal, which was a substantive rank (also wearing one chevron), until 1920. Until 1920, bombardiers in the Royal Artillery were equivalent to second corporals and until 1918 (when the rank of lance bombardier replaced it) acting bombardiers were equivalent to lance corporals (both wearing one chevron).
In the infantry, a lance corporal usually serves as second-in-command of a section and commander of its delta fire team. It is also a rank commonly held by specialists such as clerks, drivers, signallers, machine-gunners, and mortarmen. In the Intelligence Corps and Royal Military Police all other ranks are promoted to lance corporal on the completion of their training.

Lance, not lieutenant, I was getting mixed up.