Col. Alden Cox promotes the private who shot and killed Sid Liao to the rank of E-3, Private 1st Class. There was no "E Designation" of enlisted ranks in the US Army until 1955.
Army Regulation 615-15, dated 2 July 1954, announced a new grade structure effective 1 March 1955. The new titles were: E7 Master Sergeant (First Sgt was an occupational title) and Master Specialist E6 Sergeant 1st Class; Specialist 1st Class E5 Sergeant; Specialist 2d Class E4 Corporal; Specialist 3d Class E3 Private First Class E2 Private E2 E1 Private E1
Army Regulation 615-15, dated 2 July 1954, announced a new grade structure effective 1 March 1955. The new titles were: E7 Master Sergeant (First Sgt was an occupational title) and Master Specialist E6 Sergeant 1st Class; Specialist 1st Class E5 Sergeant; Specialist 2d Class E4 Corporal; Specialist 3d Class E3 Private First Class E2 Private E2 E1 Private E1