The M72 LAW (Light Anti-Tank Weapon) is a portable, one-shot, 66 mm unguided anti-tank weapon that entered service with the US military in the early 1960s. It was designed to replace older anti-tank weapons and has been used in various conflicts, including the Vietnam War, and has been exported to 39 countries. Despite its limitations, such as a limited effective range and single-use capability, the M72 LAW remains a valuable tool for infantry units facing armored threats.