The law does not prescribe how to display the flag on a military uniform.
I tried to attach a .pdf file with the entire section (105-225), but TD doesn't allow attachment of .pdf's.
Pub. L. 105-225, Sec. 2(a), Aug. 12, 1998, 112 Stat. 1498.
``Sec. 10. Modification of rules and customs by President
``Any rule or custom pertaining to the display of the flag of the United States of America, set forth herein, may be altered, modified, or repealed, or additional rules with respect thereto may be prescribed, by the Commander in Chief of the Armed Forces of the United States, whenever he deems it to be appropriate or desirable; and any such alteration or additional rule shall be set forth in a proclamation.''.
(b) The analysis of chapter 1 of title 4, United States Code, is amended by adding at the end the following new items:
``4. Pledge of allegiance to the flag; manner of delivery.
``5. Display and use of flag by civilians; codification of rules and customs; definition.
``6. Time and occasions for display.
``7. Position and manner of display.
``8. Respect for flag.
``9. Conduct during hoisting, lowering or passing of flag.
``10. Modification of rules and customs by President.''.
Public Law 92
The 92nd Congress was in session from Janaury 3, 1971 to January 3, 1973 (last two years of President Nixon's first administration).
Public Law 105
The 105th Congress was in session from Janaury 3, 1997 to January 3, 1999 (first two years of President Clinton's second administration).