`(a) PAYMENT OF BOTH RETIRED PAY AND COMPENSATION- Except as provided in subsection (b), a member or former member of the uniformed services who is entitled to retired pay (other than as specified in subsection (c)) and who is also entitled to veterans' disability compensation is entitled to be paid both without regard to sections 5304 and 5305 of title 38.
`(b) SPECIAL RULE FOR CHAPTER 61 CAREER RETIREES- The retired pay of a member retired under chapter 61 of this title with 20 years or more of service otherwise creditable under section 1405 of this title at the time of the member's retirement is subject to reduction under sections 5304 and 5305 of title 38, but only to the extent that the amount of the member's retired pay under chapter 61 of this title exceeds the amount of retired pay to which the member would have been entitled under any other provision of law based upon the member's service in the uniformed services if the member had not been retired under chapter 61 of this title.