Source: http://uscode.house.gov/view.xhtml?req=granuleid:USC-prelim-title10-section688&num=0&edition=prelim
Timestamp: 2019-04-24 20:27:39+00:00

Document:
(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.
(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, 7311, 7314, 8323, 9311, or 9314 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.
(1) An officer who retired under section 638 of this title.
(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.
(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 attaché or service attaché 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.
A prior section 688, added Pub. L. 96–513, title I, §106, Dec. 12, 1980, 94 Stat. 2868 ; amended Pub. L. 98–94, title X, §1017(b)(1)–(3), Sept. 24, 1983, 97 Stat. 669 ; Pub. L. 99–145, title V, §516, Nov. 8, 1985, 99 Stat. 630 ; Pub. L. 102–190, div. A, title V, §506(a), Dec. 5, 1991, 105 Stat. 1359 ; Pub. L. 103–160, div. A, title V, §563, Nov. 30, 1993, 107 Stat. 1669 , provided that certain retired members of the armed forces could be ordered to active duty, prior to repeal by Pub. L. 104–201, div. A, title V, §521(a), (b), Sept. 23, 1996, 110 Stat. 2515 , 2517, effective Sept. 30, 1997. See sections 688 to 690 of this title.
2018-Subsec. (b)(2). Pub. L. 115–232 substituted "section 1293, 7311, 7314, 8323, 9311, or 9314" for "section 1293, 3911, 3914, 6323, 8911, or 8914".
Subsec. (d)(2)(A). Pub. L. 115–232 substituted "section 7311, 8323, or 9311" for "section 3911, 6323, or 8911".
2001-Subsec. (e)(2)(D). Pub. L. 107–107 added subpar. (D).
1997-Subsec. (e). Pub. L. 105–85 designated existing provisions as par. (1) and added par. (2).
Pub. L. 107–107, div. A, title V, §509(c), Dec. 28, 2001, 115 Stat. 1091 , provided that: "The amendments made by subsections (a) and (b) [amending this section and section 690 of this title] shall apply with respect to officers serving on active duty as a defense attaché or service attaché on or after the date of the enactment of this Act [Dec. 28, 2001]."
Pub. L. 104–201, div. A, title V, §521(b), Sept. 23, 1996, 110 Stat. 2517 , provided that: "The amendments made by this section [enacting this section and sections 689 and 690 of this title, amending section 6151 of this title, and repealing former section 688 of this title] shall take effect on September 30, 1997."

References: §106
 §1017
 §516
 §506
 §563
 §521
 §509
 §521