37 USC 416 - Uniform allowance: officers; additional allowances

(a) In addition to the allowance provided by section 415 of this title, a reserve officer of an armed force, an officer of the Army or the Air Force without specification of component, or a regular officer of an armed force appointed under section 2106 or 2107 of title 10 is entitled to not more than $200 as reimbursement for additional uniforms and equipment required on that duty, for each time that the officer enters on active duty for a period of more than 90 days.
(b) Subsection (a) does not apply to a tour of active duty if
(1) the officer, during that tour or within a period of two years before entering on that tour, received, under any law, an initial uniform reimbursement or allowance of more than $400; or
(2) the officer enters on that tour within two years after completing a period of active duty of more than 90 days duration.