TITLE 10 - US CODE - CHAPTER 1207 - WARRANT OFFICERS

10 USC 12241 - Warrant officers: grades; appointment, how made; term

(a) The permanent reserve warrant officer grades in each armed force are those prescribed for regular warrant officers by section 571 (a) of this title.
(b) Appointments made in the permanent reserve grade of warrant officer, W1, shall be made by warrant by the Secretary concerned. Appointments made in a permanent reserve grade of chief warrant officer shall be made by commission by the Secretary concerned.
(c) Appointments as Reserves in permanent warrant officer grades are for an indefinite term and are held during the pleasure of the Secretary concerned.

10 USC 12242 - Warrant officers: promotion

The promotion of permanent reserve warrant officers not on the warrant officer active-duty list to permanent reserve warrant officer grades shall be governed by such regulations as the Secretary concerned may prescribe.

10 USC 12243 - Warrant officers: suspension of laws for promotion or mandatory retirement or separation during war or emergency

In time of war, or of emergency declared after May 29, 1954, by Congress or the President, the President may suspend the operation of any provision of law relating to promotion, or mandatory retirement or separation, of permanent reserve warrant officers of any armed force.

10 USC 12244 - Warrant officers: discharge or retirement for years of service or for age

Each reserve warrant officer of the Army, Navy, Air Force, or Marine Corps who is in an active status and has reached the maximum years of service or age prescribed by the Secretary concerned shall
(1) be transferred to the Retired Reserve if the warrant officer 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 warrant officer 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.