(a) Required Notice.— At least 30 days before a promotion board is convened under section
14101 (a) of this title to consider officers in a grade and competitive category for promotion to the next higher grade, the Secretary concerned shall either
(1) notify in writing the officers eligible for consideration by the board for promotion regarding the convening of the board, or
(2) issue a general written notice to the armed force concerned regarding the convening of the board.