SD:AB Leader (US)

 is a United States Infantry unit.

Overview
The Platoon Headquarters for a Parachute Platoon has originally had two officers 1st and 2nd Lieutenant because to lessen risk of losing Platoon leaders because of scattered drop. The second officer was dropped because of officers losses. The officer were added by a Platoon Sergeant, Sergeant Guide and three messengers one of which carried a radio.