37 U.S.C. § 419 : US Code - Section 419: Civilian clothing allowance

Search 37 U.S.C. § 419 : US Code - Section 419: Civilian clothing allowance

Under regulations prescribed by the Secretary of Defense, an
officer of an armed force who is assigned to a permanent duty
station at a location outside the United States may be paid a
civilian clothing allowance in such amount as the Secretary shall
determine under regulations if such officer is required to wear
civilian clothing all or a substantial portion of the time in the
performance of the officer's official duties. A clothing allowance
under this section is in addition to any uniform allowance to which
an officer is otherwise entitled under this title.