((a)) ** .—**

((1)) Whenever the needs of the Army, Navy, Air Force, or Marine Corps require, the Secretary concerned shall convene a selection board to recommend for promotion to the next higher grade, under chapter 1405 of this title, officers on the reserve active-status list of that armed force in a permanent grade from first lieutenant through brigadier general or, in the case of the Navy Reserve, lieutenant (junior grade) through rear admiral (lower half). A selection board convened under this subsection shall be known as a “promotion board”.

((2)) A promotion board convened to recommend reserve officers of the Army or reserve officers of the Air Force for promotion (A) to fill a position vacancy under , or (B) to the grade of brigadier general or major general, shall be known as a “vacancy promotion board”. Any other promotion board convened under this subsection shall be known as a “mandatory promotion board”.

((3)) Paragraph (1) does not require the convening of a selection board in the case of officers in the permanent grade of first lieutenant or, in the case of the Navy, lieutenant (junior grade) when the Secretary concerned recommends for promotion to the next higher grade under all such officers whom the Secretary finds to be fully qualified for promotion.

((b)) ** .—** Whenever the needs of the Army, Navy, Air Force, or Marine Corps require, the Secretary concerned may convene a selection board to recommend officers of that armed force—

((1)) for selective early removal from the reserve active-status list under ; or

((2)) for selective early retirement under .