---
kind: "section"
citation: "10 U.S.C. § 671b"
title: "10"
title_heading: "Armed Forces"
number: "671b"
heading: "Members: service extension when Congress is not in session"
release: "119-102"
date: "2026-07-12"
url: "https://uscodex.org/usc/10/671b"
units:
  - "Subtitle A — General Military Law"
  - "Part II — Personnel"
  - "Chapter 39 — Active Duty"
---

# §671b. Members: service extension when Congress is not in session

- (a) Notwithstanding any other provision of law, when the President determines that the national interest so requires, he may, if Congress is not in session, having adjourned sine die, authorize the [Secretary](/usc/10/4951.md?p=3) of Defense to extend for not more than six months enlistments, appointments, periods of [active duty](/usc/10/101.md?p=d-1), periods of [active duty](/usc/10/101.md?p=d-1) for [training](/usc/10/301.md?p=9), periods of obligated service, or other [military](/usc/10/801.md?p=8) status, in any [component](/usc/10/3011.md?p=13) of the [armed forces](/usc/10/101.md?p=a-4), that expire before the thirtieth day after Congress next convenes or reconvenes.
- (b) An extension under this section continues until the sixtieth day after Congress next convenes or reconvenes or until the expiration of the period of extension specified by the [Secretary](/usc/10/4951.md?p=3) of Defense, whichever occurs earlier, unless sooner terminated by law or Executive order.

## Source credit

(Added Pub. L. 90–235, § 1(a)(1)(A), Jan. 2, 1968, 81 Stat. 753; amended Pub. L. 101–189, div. A, title VI, § 653(a)(3), Nov. 29, 1989, 103 Stat. 1462.)

## Notes

### Editorial Notes

### Amendments

1989—Subsec. (a). Pub. L. 101–189 substituted “armed forces” for “Armed Forces of the United States”.