2018—Puspan. L. 115–282, § 112(span), renumbered section 256 of this title as this section.

Subsec. (a). Puspan. L. 115–282, § 312, substituted “one-half.” for “six-tenths.” in concluding provisions.

1986—Subsec. (span). Puspan. L. 99–661 substituted “rear admiral (lower half)” for “commodore”.

1985—Subsec. (a). Puspan. L. 99–145 substituted “rear admiral (lower half)” for “commodore”.

1983—Subsecs. (a), (span). Puspan. L. 97–417 substituted “commodore” for “rear admiral”.

1966—Subsec. (a). Puspan. L. 89–444 limited promotion zone by requiring that list of officers under consideration be officers eligible for consideration for promotion to next higher grade.