This chapter, referred to in text, was in the original “this Act”, meaning act July 26, 1947, ch. 343, 61 Stat. 495, known as the National Security Act of 1947, which is classified principally to this chapter. For complete classification of this Act to the Code, see Tables.

A former section 205(b) of act July 26, 1947, ch. 343, title II, 61 Stat. 501, which deemed laws, orders, and regulations applicable to the Department of War to be applicable to the newly designated Department of the Army, was classified to section 181–1(b) of former Title 5, Executive Departments and Government Officers and Employees, prior to being omitted from the Code upon the enactment of Title 10, Armed Forces, by act Aug. 10, 1956. Section 205(b) of act July 26, 1947, was subsequently redesignated as section 205(a) of that Act by Pub. L. 116–92, div. E, title LXVII, § 6742(b)(7), Dec. 20, 2019, 133 Stat. 2240.

Section was formerly classified to section 409 of this title prior to editorial reclassification and renumbering as this section, and to section 171–2 of Title 5 prior to the general revision and enactment of Title 5, Government Organization and Employees, by Pub. L. 89–554, § 1, Sept. 6, 1966, 80 Stat. 378.

Prior to the enactment of Title 10, Armed Forces, by act Aug. 10, 1956, subsecs. (a), (b), and (c) of this section were classified to sections 181–1(c), 411a(a), and 626(c), respectively, of former Title 5.

For transfer of authorities, functions, personnel, and assets of the Coast Guard, including the authorities and functions of the Secretary of Transportation relating thereto, to the Department of Homeland Security, and for treatment of related references, see sections 468(b), 551(d), 552(d), and 557 of Title 6, Domestic Security, and the Department of Homeland Security Reorganization Plan of November 25, 2002, as modified, set out as a note under section 542 of Title 6.