The Lewis Gun is a light machine gun that was developed in the early 20th century, primarily used during World War I. It features a distinctive circular magazine that holds 47 rounds and operates on a gas-operated mechanism. The gun is known for its reliability and ease of use, making it a popular choice among infantry units. Designed by Isaac Newton Lewis, the Lewis Gun was one of the first machine guns to be used in aerial combat, mounted on aircraft to provide suppressive fire. Its lightweight design allowed for portability, enabling soldiers to carry it into battle effectively.