2021—Subsec. (a)(2). Pub. L. 116–283 substituted “Marine Corps, or Space Force” for “or Marine Corps”.

2018—Subsec. (a)(5). Pub. L. 115–232 substituted “section 7311, 8323, or 9311” for “section 3911, 6323, or 8911” in concluding provisions.

2008—Subsec. (b)(3). Pub. L. 110–181 substituted “except as provided under section 1251 or 1253 of this title” for “but such period may not (except as provided under section 1251(b) of this title) extend beyond the date of the officer’s sixty-second birthday”.

1990—Subsec. (c). Pub. L. 101–510, § 521(b)(1)(A), inserted at end “The period of the continuation on active duty of an officer under this section may be reduced by the Secretary concerned in the case of any officer as provided in section 638a of this title.”

Subsecs. (d), (e). Pub. L. 101–510, § 521(b)(1)(B), (C), added subsec. (d) and redesignated former subsec. (d) as (e).

1985—Subsec. (b)(2). Pub. L. 99–145 substituted “rear admiral (lower half)” for “commodore”.

1984—Subsec. (a)(2). Pub. L. 98–525, § 1405(15)(A), substituted “20” for “twenty”.

Subsec. (a)(3). Pub. L. 98–525, § 1405(15)(B), substituted “24” for “twenty-four”.

1981—Subsec. (b)(1). Pub. L. 97–22, § 4(e)(1), substituted “section 633 or 634” for “section 633, 634, 635, or 636”.

Subsec. (b)(2). Pub. L. 97–86 substituted “commodore” for “commodore admiral”.

Pub. L. 97–22, § 4(e)(2), inserted provision that an officer subject to retirement under section 635 or 636 of this title who is serving in the grade of brigadier general, commodore admiral, major general, or rear admiral may, subject to the needs of the service, have his retirement deferred and be continued on active duty by the Secretary concerned and struck out requirement that the deferral of the retirement of an officer subject to retirement under section 635 or 636 of this title serving in a grade above major general or rear admiral was subject to the needs of the service.

Amendment by Pub. L. 115–232 effective Feb. 1, 2019, with provision for the coordination of amendments and special rule for certain redesignations, see section 800 of Pub. L. 115–232, set out as a note preceding section 3001 of this title.

Amendment by Pub. L. 97–86 effective Sept. 15, 1981, see section 405(f) of Pub. L. 97–86, set out as a note under section 101 of this title.

Section effective Sept. 15, 1981, but the authority to prescribe regulations under this subchapter effective on Dec. 12, 1980, see section 701 of Pub. L. 96–513, set out as an Effective Date of 1980 Amendment note under section 101 of this title.

For provisions to prevent extinction or premature termination of rights, duties, penalties, or proceedings that existed or were begun prior to the effective date of Pub. L. 96–513 and otherwise to allow for an orderly transition to the system of officer personnel management put in place under Pub. L. 96–513, see section 601 et seq. of Pub. L. 96–513, set out as a note under section 611 of this title.