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Title 10 — Armed ForcesRelease 119-73

§8001 Definitions

Title 10 › Subtitle Subtitle C— - Navy and Marine Corps › Part PART I— - ORGANIZATION › Chapter CHAPTER 801— - DEFINITIONS › § 8001

Last updated Apr 6, 2026|Official source

Summary

Defines key naval-service terms used in this subtitle. Navy is the United States Navy and includes the Regular Navy, the Fleet Reserve, and the Navy Reserve. Marine Corps is the United States Marine Corps and includes the Regular Marine Corps, the Fleet Marine Corps Reserve, and the Marine Corps Reserve. Member of the naval service is a person appointed, enlisted, inducted, or conscripted into the Navy or Marine Corps. Enlisted member is someone serving in an enlisted rank or rating (generally not someone temporarily appointed as an officer). Officer is someone serving as a commissioned or warrant officer (and generally includes those temporarily appointed as such). Commissioned officer serves in a grade above warrant officer W-1. Warrant officer serves in a warrant officer grade. Officer restricted in the performance of duty is a Navy officer assigned to engineering, aeronautical engineering, special, or limited duty, or a Marine Corps officer assigned to limited duty. If a member temporarily holds a higher grade than their permanent grade, they are treated as serving in the higher grade unless this subtitle says otherwise.

Full Legal Text

Title 10, §8001

Armed Forces — Source: USLM XML via OLRC

(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.

Legislative History

Notes & Related Subsidiaries

Editorial Notes

Prior Provisions

A prior section 8010 was renumbered section 8011 of this title.

Amendments

2018—Pub. L. 115–232 renumbered section 5001 of this title as this section. 2006—Subsec. (a)(1). Pub. L. 109–163 substituted “Navy Reserve” for “Naval Reserve”. 1987—Subsec. (a). Pub. L. 100–26 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). Pub. L. 96–513, § 513(2), struck out “, male or female,” after “person”. Subsec. (a)(9), (10). Pub. L. 96–513, § 371, struck out pars. (9) and (10) which defined the active lists of the Navy and the Marine Corps, respectively. See section 101 of this title. 1961—Subsec. (a)(8). Pub. L. 87–123 struck out provisions which related to Marine Corps officers designated for supply duty.

Statutory Notes and Related Subsidiaries

Effective Date

of 2018 AmendmentAmendment by Pub. L. 115–232 effective Feb. 1, 2019, with provision for the coordination of

Amendments

and special rule for certain redesignations, see section 800 of Pub. L. 115–232, set out as a note preceding section 3001 of this title.

Effective Date

of 1980 AmendmentAmendment by section 371 of Pub. L. 96–513 effective Sept. 15, 1981, but the authority to prescribe

Regulations

under the amendment by Pub. L. 96–513 effective on Dec. 12, 1980, see section 701 of Pub. L. 96–513, set out as a note under section 101 of this title. Amendment by section 513(2) of Pub. L. 96–513 effective Dec. 12, 1980, see section 701(b)(3) of Pub. L. 96–513.

Reference

Citations & Metadata

Citation

10 U.S.C. § 8001

Title 10 — Armed Forces

Last Updated

Apr 6, 2026

Release point: 119-73