A prior section 974, added Pub. L. 90–235, § 6(a)(6)(A), Jan. 2, 1968, 81 Stat. 762; amended Pub. L. 101–510, div. A, title III, § 327(e), Nov. 5, 1990, 104 Stat. 1532, related to civilian employment by enlisted members, prior to repeal by Pub. L. 105–261, div. A, title V, § 569(a), Oct. 17, 1998, 112 Stat. 2032.

2017—Subsec. (d)(3). Pub. L. 115–91 struck out par. (3) which read as follows: “Not later than January 30 of each year, the Secretary concerned shall submit to Congress a report on any contributions of money, personal property, and services accepted under paragraph (1) during the fiscal year preceding the fiscal year during which the report is submitted.”

2013—Subsecs. (d) to (f). Pub. L. 113–66 added subsec. (d) and redesignated former subsecs. (d) and (e) as (e) and (f), respectively.

2009—Pub. L. 111–84 amended section generally. Prior to amendment, section related to uniform performance policies for military bands and other musical units.