37 U.S.C. § 302f: Special pay: reserve, recalled, or retained health care officers

the call or order of the officer to active duty be for a period of not less than one year; or the officer execute a written agreement to remain on active duty for a period of not less than one year. is a reserve officer on active duty (other than for training) under a call or order to active duty for a period of more than 30 days but less than one year; is involuntarily retained on active duty under section 12305 of title 10 , or is recalled to active duty under section 688 of title 10 for a period of more than 30 days; or officers are involuntarily retained on active duty under section 12305 of title 10 ; or the Secretary of Defense determines (pursuant to regulations prescribed by the Secretary) that special circumstances justify the payment of special pay under this section. Payment of special pay pursuant to this section may be made on a monthly basis. The officer shall repay in the manner provided in section 303a(e) of this title any amount received under this section in excess of the amount that corresponds to the actual period of active duty served by the officer. While a reserve medical or dental officer receives a special pay under section 302 or 302b of this title by reason of subsection (a), the officer shall not be entitled to special pay under section 302(h) or 302b(h) of this title. the call or order of the officer to active duty be for a period of not less than one year; or the officer execute a written agreement to remain on active duty for a period of not less than one year. is a reserve officer on active duty under a call or order to active duty for a period of less than one year in connection with Operation Desert Storm; is involuntarily retained on active duty under section 673c [now 12305] of title 10, United States Code, or is recalled to active duty under section 688 of that title, in connection with Operation Desert Storm; or voluntarily agrees to remain on active duty for a period of less than one year in connection with Operation Desert Storm. Payment of special pay pursuant to this section may be made on a monthly basis. If the service on active duty of an officer described in subsection (b) is terminated before the end of the period for which a payment is made to the officer under subsection (a), the officer is entitled to special pay under section 302, 302a, 302b, 302e, or 303 of title 37, United States Code (whichever applies), only for the portion of that period that the officer actually served on active duty. The officer shall refund any amount received in excess of the amount that corresponds to the period of active duty of the officer. While a reserve medical officer receives a special pay under section 302 of title 37 , United States Code, by operation of subsection (a), the officer shall not be entitled to special pay under subsection (h) of that section. Subsection (a) shall apply during the period beginning on August 1, 1990 , and ending on the first day of the first month beginning on or after the date 180 days after the end of the Persian Gulf conflict.”