TITLE 10 - US CODE - CHAPTER 39 - ACTIVE DUTY

10 USC 671 - Members not to be assigned outside United States before completing training

(a) A member of the armed forces may not be assigned to active duty on land outside the United States and its territories and possessions until the member has completed the basic training requirements of the armed force of which he is a member.
(b) In time of war or a national emergency declared by Congress or the President, the period of required basic training (or its equivalent) may not (except as provided in subsection (c)) be less than 12 weeks.
(c) 
(1) A period of basic training (or equivalent training) shorter than 12 weeks may be established by the Secretary concerned for members of the armed forces who have been credentialed in a medical profession or occupation and are serving in a health-care occupational specialty, as determined under regulations prescribed under paragraph (2). Any such period shall be established under regulations prescribed under paragraph (2) and may be established notwithstanding section 4(a) of the Military Selective Service Act (50 App. U.S.C. 454 (a)).
(2) The Secretary of Defense, and the Secretary of Homeland Security with respect to the Coast Guard when it is not operating as a service in the Navy, shall prescribe regulations for the purposes of paragraph (1). The regulations prescribed by the Secretary of Defense shall apply uniformly to the military departments.

10 USC 671a - Members: service extension during war

Unless terminated at an earlier date by the Secretary concerned, the period of active service of any member of an armed force is extended for the duration of any war in which the United States may be engaged and for six months thereafter.

10 USC 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 of Defense to extend for not more than six months enlistments, appointments, periods of active duty, periods of active duty for training, periods of obligated service, or other military status, in any component of the armed forces, 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 of Defense, whichever occurs earlier, unless sooner terminated by law or Executive order.

10 USC 672 - Reference to chapter 1209

Provisions of law relating to service of members of reserve components on active duty are set forth in chapter 1209 of this title (beginning with section 12301).

10 USC 673 - Renumbered 12302]

10 USC 673a - Renumbered 12303]

10 USC 673b - Renumbered 12304]

10 USC 673c - Renumbered 12305]

10 USC 674 - Renumbered 12306]

10 USC 675 - Renumbered 12307]

10 USC 676 - Renumbered 12308]

10 USC 677 - Renumbered 12309]

10 USC 678 - Renumbered 12310]

10 USC 679 - Renumbered 12311]

10 USC 680 - Renumbered 12312]

10 USC 681 - Renumbered 12313]

10 USC 682 - Renumbered 12314]

10 USC 683 - Renumbered 12315]

10 USC 684 - Renumbered 12316]

10 USC 685 - Renumbered 12317]

10 USC 686 - Renumbered 12318]

10 USC 687 - Renumbered 12319]

10 USC 688 - Retired members: authority to order to active duty; duties

(a) Authority.— 
Under regulations prescribed by the Secretary of Defense, a member described in subsection (b) may be ordered to active duty by the Secretary of the military department concerned at any time.
(b) Covered Members.— 
Except as provided in subsection (d), subsection (a) applies to the following members of the armed forces:
(1) A retired member of the Regular Army, Regular Navy, Regular Air Force, or Regular Marine Corps.
(2) A member of the Retired Reserve who was retired under section 1293, 3911, 3914, 6323, 8911, or 8914 of this title.
(3) A member of the Fleet Reserve or Fleet Marine Corps Reserve.
(c) Duties of Member Ordered to Active Duty.— 
The Secretary concerned may, to the extent consistent with other provisions of law, assign a member ordered to active duty under this section to such duties as the Secretary considers necessary in the interests of national defense.
(d) Exclusion of Officers Retired on Selective Early Retirement Basis.— 
The following officers may not be ordered to active duty under this section:
(1) An officer who retired under section 638 of this title.
(2) An officer who
(A) after having been notified that the officer was to be considered for early retirement under section 638 of this title by a board convened under section 611 (b) of this title and before being considered by that board, requested retirement under section 3911, 6323, or 8911 of this title; and
(B) was retired pursuant to that request.
(e) Limitation of Period of Recall Service.— 

(1) A member ordered to active duty under subsection (a) may not serve on active duty pursuant to orders under that subsection for more than 12 months within the 24 months following the first day of the active duty to which ordered under that subsection.
(2) Paragraph (1) does not apply to the following officers:
(A) A chaplain who is assigned to duty as a chaplain for the period of active duty to which ordered.
(B) A health care professional (as characterized by the Secretary concerned) who is assigned to duty as a health care professional for the period of active duty to which ordered.
(C) An officer assigned to duty with the American Battle Monuments Commission for the period of active duty to which ordered.
(D) An officer who is assigned to duty as a defense attache or service attache for the period of active duty to which ordered.
(f) Waiver for Periods of War or National Emergency.— 
Subsections (d) and (e) do not apply in time of war or of national emergency declared by Congress or the President.

10 USC 688a - Retired members: temporary authority to order to active duty in high-demand, low-density assignments

(a) Authority.— 
The Secretary of a military department may order to active duty a retired member who agrees to serve on active duty in an assignment intended to alleviate a high-demand, low-density military capability or in any other specialty designated by the Secretary as critical to meet wartime or peacetime requirements. Any such order may be made only with the consent of the member ordered to active duty and in accordance with an agreement between the Secretary and the member.
(b) Duration.— 
The period of active duty of a member under an order to active duty under subsection (a) shall be specified in the agreement entered into under that subsection.
(c) Limitation.— 
No more than a total of 1,000 members may be on active duty at any time under subsection (a).
(d) Relationship to Other Authority.— 
The authority to order a retired member to active duty under this section is in addition to the authority under section 688 of this title or any other provision of law authorizing the Secretary concerned to order a retired member to active duty.
(e) Inapplicability of Certain Provisions.— 
Retired members ordered to active duty under subsection (a) shall not be counted for purposes of section 688 or 690 of this title.
(f) Expiration of Authority.— 
A retired member may not be ordered to active duty under this section after December 31, 2010.
(g) High-Demand, Low-Density Military Capability Defined.— 
In this section, the term high-demand, low-density military capability means a combat, combat support or service support capability, unit, system, or occupational specialty that the Secretary of Defense determines has funding, equipment, or personnel levels that are substantially below the levels required to fully meet or sustain actual or expected operational requirements set by regional commanders.

10 USC 689 - Retired members: grade in which ordered to active duty and upon release from active duty

(a) General Rule for Grade in Which Ordered to Active Duty.— 
Except as provided in subsections (b) and (c), a retired member ordered to active duty under section 688 or 688a of this title shall be ordered to active duty in the members retired grade.
(b) Members Retired in O–9 and O–10 Grades.— 
A retired member ordered to active duty under section 688 or 688a of this title whose retired grade is above the grade of major general or rear admiral shall be ordered to active duty in the highest permanent grade held by such member while serving on active duty.
(c) Members Who Previously Served in Grade Higher Than Retired Grade.— 

(1) A retired member ordered to active duty under section 688 or 688a of this title who has previously served on active duty satisfactorily, as determined by the Secretary of the military department concerned, in a grade higher than that members retired grade may be ordered to active duty in the highest grade in which the member had so served satisfactorily, except that such a member may not be so ordered to active duty in a grade above major general or rear admiral.
(2) A retired member ordered to active duty in a grade that is higher than the members retired grade pursuant to subsection (a) shall be treated for purposes of section 690 of this title as if the member was promoted to that higher grade while on that tour of active duty.
(3) If, upon being released from that tour of active duty, such a retired member has served on active duty satisfactorily, as determined by the Secretary concerned, for not less than a total of 36 months in a grade that is a higher grade than the members retired grade, the member is entitled to placement on the retired list in that grade.
(d) Grade Upon Release From Active Duty.— 
A member ordered to active duty under section 688 or 688a of this title who, while on active duty, is promoted to a grade that is higher than that members retired grade is entitled, upon that members release from that tour of active duty, to placement on the retired list in the highest grade in which the member served on active duty satisfactorily, as determined by the Secretary of the military department concerned, for not less than six months.

10 USC 690 - Retired members ordered to active duty: limitation on number

(a) General and Flag Officers.— 
Not more than 15 retired general officers of the Army, Air Force, or Marine Corps, and not more than 15 retired flag officers of the Navy, may be on active duty at any one time. For the purposes of this subsection a retired officer ordered to active duty for a period of 60 days or less is not counted.
(b) Limitation by Service.— 

(1) Not more than 25 officers of any one armed force may be serving on active duty concurrently pursuant to orders to active duty issued under section 688 of this title.
(2) In the administration of paragraph (1), the following officers shall not be counted:
(A) A chaplain who is assigned to duty as a chaplain for the period of active duty to which ordered.
(B) A health care professional (as characterized by the Secretary concerned) who is assigned to duty as a health care professional for the period of the active duty to which ordered.
(C) Any officer assigned to duty with the American Battle Monuments Commission for the period of active duty to which ordered.
(D) Any member of the Retiree Council of the Army, Navy, or Air Force for the period on active duty to attend the annual meeting of the Retiree Council.
(E) An officer who is assigned to duty as a defense attache or service attache for the period of active duty to which ordered.
(c) Waiver for Periods of War or National Emergency.— 
Subsection (a) does not apply in time of war or of national emergency declared by Congress or the President after November 30, 1980. Subsection (b) does not apply in time of war or of national emergency declared by Congress or the President.

10 USC 691 - Permanent end strength levels to support two major regional contingencies

(a) The end strengths specified in subsection (b) are the minimum strengths necessary to enable the armed forces to fulfill a national defense strategy calling for the United States to be able to successfully conduct two nearly simultaneous major regional contingencies.
(b) Unless otherwise provided by law, the number of members of the armed forces (other than the Coast Guard) on active duty at the end of any fiscal year shall be not less than the following:
(1) For the Army, 532,400.
(2) For the Navy, 325,300.
(3) For the Marine Corps, 194,000.
(4) For the Air Force, 317,050.
(c) The budget for the Department of Defense for any fiscal year as submitted to Congress shall include amounts for funding for each of the armed forces (other than the Coast Guard) at least in the amounts necessary to maintain the active duty end strengths prescribed in subsection (b), as in effect at the time that such budget is submitted.
(d) No funds appropriated to the Department of Defense may be used to implement a reduction of the active duty end strength for any of the armed forces (other than the Coast Guard) for any fiscal year below the level specified in subsection (b) unless the reduction in end strength for that armed force for that fiscal year is specifically authorized by law.
[(e) Repealed. Pub. L. 107–314, div. A, title IV, 402(b), Dec. 2, 2002, 116 Stat. 2525.]
(f) The number of members of the armed forces on active duty shall be counted for purposes of this section in the same manner as applies under section 115 (a)(1) of this title.