A prior section 5537, act Aug. 10, 1956, ch. 1041, 70A Stat. 319, provided for extension of naval service during disability incident to service, prior to repeal by Pub. L. 90–235, § 2(a)(3), Jan. 2, 1968, 81 Stat. 756.

Provisions similar to those in this section were contained in Pub. L. 117–81, div. A, title XVI, § 1662(a), Dec. 27, 2021, 135 Stat. 2103, which was set out in a note under section 4022 of this title, prior to repeal by Pub. L. 118–159, div. A, title XVI, § 1649(b)(2), Dec. 23, 2024, 138 Stat. 2199.

Prior sections 5538 and 5539 were repealed by Pub. L. 90–235, § 2(a)(3), Jan. 2, 1968, 81 Stat. 756.

Section 5538, act Aug. 10, 1956, ch. 1041, 70A Stat. 319, provided for extension of enlistments in Regular Navy or Regular Marine Corps during war or national emergency.

Section 5539, acts Aug. 10, 1956, ch. 1041, 70A Stat. 320; Sept. 2, 1958, Pub. L. 85–861, § 1(116), 72 Stat. 1493; Sept. 7, 1962, Pub. L. 87–649, § 14c(27), 76 Stat. 501, provided for voluntary extension or re-extension of enlistments in Regular Navy or Regular Marine Corps.

A prior section 5540 was renumbered section 8120 of this title.