Official mail: free transmission
32 U.S.C. § 713
in effectUnits and headquarters of the National Guard, whether or not in Federal service, have the same privilege of free mailing of official matter as the Department of Defense.
Source: OLRC USLMURL: https://uscode.house.gov/download/releasepoints/us/pl/119/95/xml_usc32@119-95.zipFetched: 6/4/2026