US Code
CHAPTER 1221— SEPARATION
§ 12684. Reserves: separation for absence without authority or sentence to imprisonment

(1) who has been absent without authority for at least three months;
(2) who may be separated under section 12687 of this title by reason of a sentence to confinement adjudged by a court-martial; or
(3) who is sentenced to confinement in a Federal or State penitentiary or correctional institution after having been found guilty of an offense by a court other than a court-martial or other military court, and whose sentence has become final.

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