US Code
CHAPTER 1203— ENLISTED MEMBERS
§ 12108. Enlisted members: discharge or retirement for years of service or for age

(1) be transferred to the Retired Reserve if the member is qualified for such transfer and does not request (in accordance with regulations prescribed by the Secretary concerned) not to be transferred to the Retired Reserve; or
(2) be discharged if the member is not qualified for transfer to the Retired Reserve or has requested (in accordance with regulations prescribed by the Secretary concerned) not to be so transferred.