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Lance corporal is a military rank, used by many armed forces worldwide, and also by some police forces and other uniformed organizations. It is below the rank of corporal, and is typically the lowest non-commissioned officer, usually equivalent to the NATO Rank Grade OR-3.

The presumed origin of the rank of lance corporal derives from an amalgamation of corporal from the Italian phrase capo corporale ("head of the body") with the now-archaic , which in turn derives from the Italian lancia spezzata, which literally means "broken lance" or "broken spear", formerly a non-commissioned officer of the lowest rank. It can be translated as "one who has broken a lance in combat", and is therefore a leader. "Lance" or "lances fournies" was also a term used in Medieval Europe to denote a unit of soldiers (usually 5 to 10 men strong).

In Commonwealth forces, a lance corporal is usually the second in command of a section. Lance corporals are commonly addressed as "corporal", with "lance jack" or "half-screw" (with corporals being "full screws") being common colloquialisms for the rank. Much like the use of bombardier instead of corporal in artillery units, lance corporals are known as lance-bombardiers in the UK, Australia and New Zealand. ). The badge of rank is a 1-bar chevron worn on both sleeves or on an epaulette.

Lance corporal is the lowest of the non-commissioned officer ranks in the Australian Army and New Zealand Army, falling between private and corporal. It is the only appointed rank, and thus demotion is easier than with other ranks, a commanding officer can demote a lance corporal, whereas other ranks require a Courts Martial for demotion. A lance corporal is usually the second in command of a section, and is in control of the gun group in an infantry section. There is no equivalent rank within the Royal Australian Air Force or Royal Australian Navy.

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