Light machine gun
A light machine gun (LMG) is a machine gun designed to be employed by an individual soldier, with or without an assistant, and as a front-line infantry support. Light machine guns are often used as squad automatic weapons.
A light machine gun may be identified either by the weapon or by its tactical role. It is used to fire in short 8 -10 round bursts, usually from a bipod; a sustained-fire mount such as a tripod is a characteristic of a medium machine gun. Some machine guns - notably General purpose machine guns - may be deployed as either a light machine gun or a medium machine gun. As a general rule, if a machine gun is deployed with a bipod it is a light machine gun; if deployed on a tripod it is a medium machine gun - unless it has a caliber of about 10mm or larger, making it a heavy machine gun. Modern light machine guns often fire smaller-caliber cartridges than medium machine guns, and are usually lighter and more compact.
Light machine guns, such as the British Lewis, were first introduced in World War One to boost the firepower of the infantry. By the end of World War II, light machine guns were usually being issued on a scale of one per section or squad, and the modern infantry squad had emerged with tactics that were built around the use of LMGs.
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