There are 13 Assistant Secretaries of Defense.

(1) There are 13 Assistant Secretaries of Defense.

(2) The Assistant Secretaries of Defense shall be appointed from civilian life by the President, by and with the advice and consent of the Senate.

One of the Assistant Secretaries is the Assistant Secretary of Defense for Special Operations and Low Intensity Conflict. He shall have as his principal duty the overall supervision (including oversight of policy and resources) of special operations activities (as defined in section 167(j) [1] of this title) and low intensity conflict activities of the Department of Defense. The Assistant Secretary is the principal civilian adviser to the Secretary of Defense on special operations and low intensity conflict matters and (after the Secretary and Deputy Secretary) is the principal special operations and low intensity conflict official within the senior management of the Department of Defense. Subject to the authority, direction, and control of the Secretary of Defense, the Assistant Secretary shall do the following:

(1) The Assistant Secretaries shall perform such duties and exercise such powers as the Secretary of Defense may prescribe.

One of the Assistant Secretaries is the Assistant Secretary of Defense for Special Operations and Low Intensity Conflict. He shall have as his principal duty the overall supervision (including oversight of policy and resources) of special operations activities (as defined in section 167(j) [1] of this title) and low intensity conflict activities of the Department of Defense. The Assistant Secretary is the principal civilian adviser to the Secretary of Defense on special operations and low intensity conflict matters and (after the Secretary and Deputy Secretary) is the principal special operations and low intensity conflict official within the senior management of the Department of Defense. Subject to the authority, direction, and control of the Secretary of Defense, the Assistant Secretary shall do the following:

(A) Exercise authority, direction, and control of all special-operations peculiar administrative matters relating to the organization, training, and equipping of special operations forces.

(B) Assist the Secretary and the Under Secretary of Defense for Policy in the development and supervision of policy, program planning and execution, and allocation and use of resources for the activities of the Department of Defense for the following: (i) Irregular warfare, combating terrorism, and the special operations activities specified by section 167(k) of this title. (ii) Integrating the functional activities of the headquarters of the Department to most efficiently and effectively provide for required special operations forces and capabilities. (iii) Such other matters as may be specified by the Secretary and the Under Secretary.

(3) One of the Assistant Secretaries is the Assistant Secretary of Defense for Legislative Affairs. He shall have as his principal duty the overall supervision of legislative affairs of the Department of Defense.

One of the Assistant Secretaries is the Assistant Secretary of Defense for Nuclear, Chemical, and Biological Defense Programs. The Assistant Secretary may communicate views on issues within the responsibility of the Assistant Secretary directly to the Secretary of Defense and the Deputy Secretary of Defense without obtaining the approval or concurrence of any other official within the Department of Defense. The Assistant Secretary shall—

(A) advise the Secretary of Defense on nuclear energy, nuclear weapons, and chemical and biological defense;

(B) serve as the Staff Director of the Nuclear Weapons Council established by section 179 of this title; and

(C) perform such additional duties as the Secretary may prescribe.

Except as otherwise specifically provided by law, an Assistant Secretary may not issue an order to a military department unless—

(1) the Secretary of Defense has specifically delegated that authority to the Assistant Secretary in writing; and

(2) the order is issued through the Secretary of the military department concerned.

The Assistant Secretaries take precedence in the Department of Defense after the Secretary of Defense, the Deputy Secretary of Defense, the Chief Management Officer of the Department of Defense, the Secretaries of the military departments, the Under Secretaries of Defense, the officials serving in positions specified in section 131(b)(4) 1 of this title, and the Deputy Under Secretaries of Defense. The Assistant Secretaries take precedence among themselves in the order prescribed by the Secretary of Defense.

(Added Pub. L. 87–651, title II, § 202, Sept. 7, 1962, 76 Stat. 518, § 136; amended Pub. L. 90–168, § 2(1), (2), Dec. 1, 1967, 81 Stat. 521; Pub. L. 91–121, title IV, § 404(a), Nov. 19, 1969, 83 Stat. 207; Pub. L. 92–215, § 1, Dec. 22, 1971, 85 Stat. 777; Pub. L. 92–596, § 4(2), Oct. 27, 1972, 86 Stat. 1318; Pub. L. 95–140, § 3(a), Oct. 21, 1977, 91 Stat. 1173; Pub. L. 96–107, title VIII, § 820(a), Nov. 9, 1979, 93 Stat. 819; Pub. L. 98–94, title XII, § 1212(a), Sept. 24, 1983, 97 Stat. 686; Pub. L. 99–433, title I, §§ 106, 110(d)(9), Oct. 1, 1986, 100 Stat. 997, 1003; Pub. L. 99–500, § 101(c) [title IX, § 9115(a)], Oct. 18, 1986, 100 Stat. 1783–82, 1783–122, and Pub. L. 99–591, § 101(c) [title IX, § 9115(a)], Oct. 30, 1986, 100 Stat. 3341–82, 3341–122; Pub. L. 99–661, div. A, title XIII, § 1311(a), Nov. 14, 1986, 100 Stat. 3983; Pub. L. 100–180, div. A, title XII, § 1211(a)(1), Dec. 4, 1987, 101 Stat. 1154; Pub. L. 100–453, title VII, § 702, Sept. 29, 1988, 102 Stat. 1912; Pub. L. 100–456, div. A, title VII, § 701, Sept. 29, 1988, 102 Stat. 1992; renumbered § 138 and amended Pub. L. 103–160, div. A, title IX, §§ 901(a)(1), (c), 903(c)(1), 905, Nov. 30, 1993, 107 Stat. 1726, 1727, 1729; Pub. L. 103–337, div. A, title IX, §§ 901(a), 903(b)(2), Oct. 5, 1994, 108 Stat. 2822, 2823; Pub. L. 104–106, div. A, title IX, §§ 902(a), 903(b), (e)(2), Feb. 10, 1996, 110 Stat. 401, 402; Pub. L. 104–201, div. A, title IX, § 901, Sept. 23, 1996, 110 Stat. 2617; Pub. L. 105–261, div. A, title IX, §§ 901(a), 902, Oct. 17, 1998, 112 Stat. 2091; Pub. L. 106–398, § 1 [[div. A], title IX, § 901], Oct. 30, 2000, 114 Stat. 1654, 1654A–223; Pub. L. 107–107, div. A, title IX, § 901(c)(1), Dec. 28, 2001, 115 Stat. 1194; Pub. L. 107–314, div. A, title IX, § 902(a), (c), (d), Dec. 2, 2002, 116 Stat. 2620, 2621; Pub. L. 109–364, div. A, title IX, § 901(a), Oct. 17, 2006, 120 Stat. 2350; Pub. L. 111–84, div. A, title IX, § 906(b)(2), Oct. 28, 2009, 123 Stat. 2426; Pub. L. 111–383, div. A, title IX, § 901(b)(4), Jan. 7, 2011, 124 Stat. 4319; Pub. L. 112–81, div. A, title III, § 314(a), Dec. 31, 2011, 125 Stat. 1357; Pub. L. 112–166, § 2(c)(1)(A), Aug. 10, 2012, 126 Stat. 1283; Pub. L. 112–239, div. A, title X, § 1076(f)(3), Jan. 2, 2013, 126 Stat. 1952; Pub. L. 113–291, div. A, title IX, §§ 901(f), (h)(1)–(3), (j)(2)(D), 902(a)(2), Dec. 19, 2014, 128 Stat. 3464, 3466, 3467, 3469; Pub. L. 114–92, div. A, title VIII, § 829, title X, § 1078(a), Nov. 25, 2015, 129 Stat. 911, 998; Pub. L. 114–328, div. A, title IX, §§ 901(e)(1), 922(a), Dec. 23, 2016, 130 Stat. 2342, 2354; Pub. L. 115–91, div. A, title IX, §§ 906(d)(2), 907, title X, § 1081(b)(1)(A), Dec. 12, 2017, 131 Stat. 1513, 1514, 1597; Pub. L. 115–232, div. A, title X, § 1081(f)(1)(D), Aug. 13, 2018, 132 Stat. 1987.)