A gold color metal and enamel device 1 3/16 inches (3.02cm) in height overall, consisting of a Blue disc surmounted throughout by a saltire divided per saltire with Red at top and bottom, and Green at either side, and centered thereon a Gold tiger's head interlaced with a Yellow fleur-de-lis; attached below a Gold scroll inscribed "LES CHARROIS" in Blue.
The disc, suggesting wheeled vehicles, and the saltire, alluding to a crossroads, symbolize the transportation mission of the former organization. Participation in four campaigns during World War II (Northern France, Rhineland, Ardennes-Alsace and, Central Europe) is denoted by the points of the saltire and the fleur-de-lis. The combined fleur-de-lis and tiger's head are symbolic of French heritage and the military tradition of the state of Louisiana. Scarlet and green refer to the French Croix de Guerre with Palm awarded to the unit for World War II action in the Moselle and Saar River Valleys, and the blue disc is the color of the Presidential Unit Citation awarded for Argentan-Falaise action, also in World War II.
The distinctive unit insignia was originally approved for the 165th Transportation Battalion on 21 January 1982. The insignia was redesignated for the 773d Maintenance Battalion, with description and symbolism revised, on 19 May 1993. It was redesignated effective 1 September 2003, for the 773d Military Police Battalion.