Title 10 › Subtitle A — General Military Law › PART II — PERSONNEL › CHAPTER 36 — PROMOTION, SEPARATION, AND INVOLUNTARY RETIREMENT OF OFFICERS ON THE ACTIVE-DUTY LIST › SUBCHAPTER IV — CONTINUATION ON ACTIVE DUTY AND SELECTIVE EARLY RETIREMENT › § 638
Lets regular officers on active duty be sent to a selection board under section 611(b) to be picked for selective early retirement if they meet certain rank and service rules. That includes: lieutenant colonel or commander who failed selection for colonel/captain two or more times and is not on the promotion list; colonel or Navy captain with at least four years in grade and not on the promotion list; brigadier general or rear admiral (lower half) with at least three and one-half years in grade and not on the promotion list; and major general or rear admiral with at least three and one-half years in grade. The service Secretary sets how many in the lieutenant colonel/commander and colonel/captain groups a board may recommend, but the number cannot be more than 30 percent of those considered in each grade and competitive category. Officers may also be considered under section 638a. If a board recommends early retirement and the Secretary approves it, officers below brigadier general/rear admiral (lower half) who are already eligible to retire will leave on the date they ask and the Secretary approves, but no later than the first day of the seventh calendar month after the month the Secretary approves the board report. If they are not yet eligible, they stay on active duty until they qualify under sections 7311, 8323, or 9311 and then retire, but not later than the later of (i) the first day of the month after they qualify or (ii) the first day of the seventh calendar month after the approval month. Officers in the grades brigadier general, major general, rear admiral (lower half), or rear admiral must retire not later than the first day of the tenth calendar month after the approval month. The service Secretary may delay a retirement for up to three months to avoid personal hardship, but cannot give that delegation to someone else; special maximum dates apply when a deferral is approved (no later than the first day of the tenth or thirteenth calendar month depending on grade). An officer below brigadier general/rear admiral (lower half) may not be considered for selective early retirement more than once in any five-year period. Such retirements count as involuntary for other laws. The Secretary of Defense must write rules for how this works, including rules that submitted lists to a board must include all officers between the most junior and most senior names submitted in the same grade and competitive category, except officers already approved for voluntary retirement under sections 7311, 8323, or 9311 or who will be involuntarily retired in the current or next fiscal year; those excluded will be retired on their approved date unless the Secretary changes it to prevent hardship.
Full Legal Text
Armed Forces, Source: USLM XML via OLRC
Legislative History
Reference
Citation
10 U.S.C. § 638
Title 10, Armed Forces
Last Updated
Aug 21, 2026
Release point: 119-102