((a)) ** .—** In the case of any pay, allowance, bonus, or other benefit described in subsection (b) that is paid to a member of the uniformed services on an installment basis, each installment payment shall be charged to appropriations that are available for obligation at the time such payment is payable.
((b)) ** .—** Subsection (a) applies to any incentive pay, special pay, or bonus, or similar periodic payment of pay or allowances, or of educational benefits or stipends, that is paid to a member of the uniformed services under this title or title 10.