A gold color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a red (brick red) disc emitting at top nine gold sun rays and charged with four five-pointed stars arched above a gold phoenix between two gold arrowheads, in front of the sun rays a semi-circular black scroll inscribed "KING OF TRANSPORTATION" in gold letters with the scroll ends disappearing behind the disc.
The four stars and two arrowheads symbolize the unit's World War II service, American Theater, New Guinea (with arrowhead), Bismarck Archipelago and Luzon (with arrowhead). The gold sunrays allude to the Philippine Presidential Unit Citation, and were also suggested by the State Flag of Arizona. The disc is symbolic of mobility; the phoenix alludes to the capital city of Arizona, the home station of the unit. Brick red and golden yellow are the colors traditionally associated with Transportation units.
The distinctive unit insignia was originally approved for the 1120th Transportation Battalion on 20 May 1970. It was redesignated effective 1 September 1980, for the 1120th Quartermaster Battalion. The insignia was redesignated for the 1120th Transportation Battalion with symbolism updated on 14 May 2008.