The Secretary of the military department concerned, under regulations prescribed by the Secretary of Defense—
may discharge any officer on the active-duty list who—
(A) has less than six years of active commissioned service; or
(B) is serving in the grade of second lieutenant or ensign and has been found not qualified for promotion to the grade of first lieutenant or lieutenant (junior grade); and
(2) shall, unless the officer has been promoted, discharge any officer described in paragraph (1)(B) at the end of the 18-month period beginning on the date on which the officer is first found not qualified for promotion.
(Added Pub. L. 96–513, title I, § 105, Dec. 12, 1980, 94 Stat. 2861; amended Pub. L. 98–525, title XIV, § 1405(11), Oct. 19, 1984, 98 Stat. 2622; Pub. L. 107–107, div. A, title V, § 505(d)(2), (4)(A), Dec. 28, 2001, 115 Stat. 1088; Pub. L. 108–136, div. A, title V, § 505(b), Nov. 24, 2003, 117 Stat. 1457; Pub. L. 110–181, div. A, title V, § 503(a)(1), (2), Jan. 28, 2008, 122 Stat. 95.)