# § 3075. “Function” and “Department of Defense” defined
**(a)** As used in sections 3002, 3021, 3023, 3025, and 3073 of this title, the term “function” includes functions, powers, and duties.
**(b)** As used in this Act, the term “Department of Defense” shall be deemed to include the military departments of the Army, the Navy, and the Air Force, and all agencies created under title II of this Act.
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**Source Credit**: (July 26, 1947, ch. 343, title III, § 308, 61 Stat. 509; Aug. 10, 1949, ch. 412, § 12(e), 63 Stat. 591; Pub. L. 116–92, div. E, title LXVII, § 6742(b)(10), Dec. 20, 2019, 133 Stat. 2240.)
## Editorial Notes
### References in Text
Title II of this Act, referred to in subsec. (b), means title II of the National Security Act of 1947, , . Section 201(d) of title II, which was formerly classified to prior to editorial reclassification and renumbering as , was repealed by , , . Section 201, enacted by , , is classified to . Sections 205(c), 206(a), and 207(c) of title II, renumbered sections 205(b), 206, and 207 by –(9), , were formerly classified to prior to editorial reclassification and renumbering as . For complete classification of title II to the Code, see Tables.
### Codification
Section was formerly classified to prior to editorial reclassification and renumbering as this section, and to prior to the general revision and enactment of Title 5, Government Organization and Employees, by , , .
### Amendments
2019—Subsec. (a). substituted “sections 3002, 3021, 3023, 3025, and 3073 of this title” for “this Act”.
1949—Subsec. (b). Act , substituted definition of “Department of Defense” for definition of “budget program”.