This was a vietcong soldier. They looked like average every day citizens and were difficult to pick out in a crowd which is why we had such a hard time in this war. We didn't know who we were fighting half the time.
Light infantry soldier of the 48th Regiment of Foot, 1759-1760 - "During the Seven Years' War, the British infantry regiments in North America converted one of their ten companies into a 'light company.' These men were trained to fight in the forests. Like the other units, the light infantry of the 48th Regiment of Foot modified their uniforms to match their new role."