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.
Around 280 armored vehicles in a Brigade, 46 Tanks por Regiment, 13 tanks per Squadron (Cavalry)/Company (infantry, support units) and 4/3 tanks per Section more support and staff. But not all units are always complete and on Squadron is always in reserve for vehicle rotation.