A Designator . The MOS code is shorthand for the personnel folks. Let s use the MOS 61F9B as an example. 61F stands for Internal Medicine. C means that the individual has completed training and is board eligible.
B stands for board certified.
A means that the individual is board certified and is recognized for high level clinical, academic, and research accomplishments. The Surgeon General s Classification Board decides who gets the A designator after reviewing nominated officers. The board places strong emphasis on research publications. Order of Military Medical Merit . Officers are selected on the basis on nomination.