# § 8001. Definitions
**(a)** In this subtitle:
**(1)** The term “Navy” means the United States Navy. It includes the Regular Navy, the Fleet Reserve, and the Navy Reserve.
**(2)** The term “Marine Corps” means the United States Marine Corps. It includes the Regular Marine Corps, the Fleet Marine Corps Reserve, and the Marine Corps Reserve.
**(3)** The term “member of the naval service” means a person appointed or enlisted in, or inducted or conscripted into, the Navy or the Marine Corps.
**(4)** The term “enlisted member” means a member of the naval service serving in an enlisted grade or rating. It excludes, unless otherwise specified, a member who holds a permanent enlisted grade and a temporary appointment in a commissioned or warrant officer grade.
**(5)** The term “officer” means a member of the naval service serving in a commissioned or warrant officer grade. It includes, unless otherwise specified, a member who holds a permanent enlisted grade and a temporary appointment in a commissioned or warrant officer grade.
**(6)** The term “commissioned officer” means a member of the naval service serving in a grade above warrant officer, W–1. It includes, unless otherwise specified, a member who holds a permanent enlisted grade or the permanent grade of warrant officer, W–1, and a temporary appointment in a grade above warrant officer, W–1.
**(7)** The term “warrant officer” means a member of the naval service serving in a warrant officer grade. It includes, unless otherwise specified, a member who holds a permanent enlisted grade and a temporary appointment in a warrant officer grade.
**(8)** The term “officer restricted in the performance of duty” means an officer of the Navy designated for engineering duty, aeronautical engineering duty, special duty, or limited duty, or an officer of the Marine Corps designated for limited duty.
**(b)** For the purposes of this subtitle, a member of the naval service who holds a temporary appointment in a grade higher than his permanent grade is considered, unless otherwise specified, to be serving in the higher grade.
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**Source Credit**: (Aug. 10, 1956, ch. 1041, 70A Stat. 276, § 5001; Pub. L. 87–123, § 5(1), Aug. 3, 1961, 75 Stat. 264; Pub. L. 96–513, title III, § 371, title V, § 513(2), Dec. 12, 1980, 94 Stat. 2903, 2931; Pub. L. 100–26, § 7(k)(2), Apr. 21, 1987, 101 Stat. 284; Pub. L. 109–163, div. A, title V, § 515(b)(1)(E), Jan. 6, 2006, 119 Stat. 3233; renumbered § 8001, Pub. L. 115–232, div. A, title VIII, § 807(a)(1), Aug. 13, 2018, 132 Stat. 1834.)
## Editorial Notes
### Prior Provisions
A prior section 8010 was renumbered .
### Amendments
2018— renumbered as this section.
2006—Subsec. (a)(1). substituted “Navy Reserve” for “Naval Reserve”.
1987—Subsec. (a). inserted “The term” after each par. designation and struck out uppercase letter of first word after first quotation marks in pars. (3) to (8) and substituted lowercase letter.
1980—Subsec. (a)(3). , struck out “, male or female,” after “person”.
Subsec. (a)(9), (10). , struck out pars. (9) and (10) which defined the active lists of the Navy and the Marine Corps, respectively. See .
1961—Subsec. (a)(8). struck out provisions which related to Marine Corps officers designated for supply duty.
## Statutory Notes and Related Subsidiaries
### Effective Date of 2018 Amendment
Amendment by effective , with provision for the coordination of amendments and special rule for certain redesignations, see , set out as a note preceding .
### Effective Date of 1980 Amendment
Amendment by effective , but the authority to prescribe regulations under the amendment by effective on , see , set out as a note under .
Amendment by effective , see .