In article <
7c71845b-cefa-a904...@privacy.net>, JackPineSavage
says...
It has changed over the years. Also the number does not necessarily designate
rank. For what it is worth I was an 11B2P as a Sp/4. This is what it was
during the Vietnam War:
Enlisted codes consisted of five digits. The first three (e.g., 11B) indicated
the position while the fourth and fifth indicated the relative level:
xxx10 - basic Infantryman (E1-E3) = 11B10
xxx20 - specialist (Specialist 4th Class, E-4) = 11B20 (Note: some SP5s were
20s, e.g., 63B20, 91B20, 94B20)
xxx30 - team leader, specialist (E-5) = 11B30 (A number of SP5 positions had
"30" MOS codes, including 64C30).
xxx40 - noncommissioned officer (Sergeant E-5, Staff Sergeant E-6, Sergeant
First Class E-7) = 11B40
xxx50 - senior noncommissioned officer (E-8, E-9) = 11B50 (or, as we shall see,
11B5M, first sergeant)