(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 RegularMarine 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