Section 439, added act July 20, 1956, ch. 647, 3(a), 70 Stat. 588, related to oath of office. See section 273 (b) of this title. Section 440, added Pub. L. 85–861, § 33(b)(1), Sept. 2, 1958, 72 Stat. 1567, related to temporary promotion of warrant officers. See section 277 of this title.