Identification Card for the British Army. Can be shown to gain discounts in places like Blacks and Burger King. Can also be shown to gain discounts in pretty much every part of America.
However, be careful when flashing it about in some parts of the country as they don't let squaddies in to some drinking establishments [I wonder why?].
It is not issued to grubby students and cadets, no matter how much they whinge, or how many threads they start about wanting one to buy that super-gucci assault vest with integral baguette and brie holder.