10 U.S.C. § 7283
Civil War battle streamers
If, under regulations prescribed by the Secretary of the Army, it is determined that a regiment or other unit of the Army is entitled to that honor, the regiment or unit may carry any appropriate Civil War battle streamer with its colors or standards.
( Aug. 10, 1956, ch. 1041 , 70A Stat. 218 , § 3753; renumbered § 7283, Pub. L. 115–232, div. A, title VIII, § 808(b)(11) , Aug. 13, 2018 , 132 Stat. 1838 .)