The EDIPI is a ten-digit number located in the barcode on the back of the card and in the integrated circuit chip embedded in the card itself. The first 9 digits are assigned unique numbers with the 10th digit being a check digit for the identifier. The EDIPI can be used as a unique person identifier.
In a British infantry battalion there are 3 rifle companies, 1 support company, 1 HQ company. Each rifle company is split into 3 platoons, and a HQ element. Each platoon is then split into 3 Sections of 8 men. Thee platoon is led by the platoon commander which is normally a 2nd lieutenant or lieutenant and a platoon sergeant.
A U.S. Army Infantry squad consists of 9-13 Soldiers led by a Staff Sergeant. Each squad is composed of 2 or more Fire Teams. Each Fire Teams consists of four men, led by a sergeant. A Fire Teams is comprised of 2 Riflemen, one being the Team Leader, a Grenadier, and an Automatic Rifleman.