The Bofors 37 mm is a Swedish anti-aircraft gun developed in the 1930s. It was designed for use by various military forces and became known for its reliability and effectiveness in targeting low-flying aircraft. The gun features a semi-automatic mechanism, allowing for a higher rate of fire compared to manual systems. This artillery piece was widely used during World War II and in various conflicts thereafter. Its versatility allowed it to be mounted on vehicles or used in fixed installations. The Bofors 37 mm remains a notable example of early 20th-century military engineering, influencing later designs in anti-aircraft weaponry.