11B40 Lt Wpns Inf

The 11B40 Light Weapons Infantryman was a specialized military occupational specialty (MOS) in the United States Army during the Vietnam War era. This role denoted a senior infantryman proficient in the employment of light weapons, such as rifles, machine guns, and anti-tank systems. Soldiers with the 11B40 designation often served as team leaders or squad leaders, responsible for directing troops in combat and utilizing a variety of infantry weapons. The MOS was integral to ground combat operations, emphasizing leadership, tactical movement, and effective use of light weaponry in diverse combat environments.