Section, added Pub. L. 88–130, §1(10)(C), Sept. 24, 1963, 77 Stat. 183, provided that warrant officers could be temporarily promoted to higher warrant officer grades under regulations prescribed by Secretary.

Section 210(a) of Pub. L. 104–324 provided that: “Section 277 of title 14, United States Code, is repealed. The repeal of such section shall not be construed to affect the status of any warrant officer currently serving under a temporary promotion.”