Light machine guns (LMGs) are portable firearms designed to provide sustained fire support for infantry units. They are typically belt-fed, allowing for a higher rate of fire compared to standard rifles. LMGs are used in various military operations and can be operated by a single soldier, making them versatile on the battlefield. These weapons are often mounted on tripods or vehicles for increased stability and accuracy. LMGs are effective in suppressing enemy positions and providing cover for advancing troops. Examples of LMGs include the M249 and Bren gun, which have been used in numerous conflicts around the world.