A gold color metal and enamel device 1 3/16 inches (3.02 cm) in height overall consisting of a hexagon, scarlet at the top and in base six wavy horizontal bars alternating green and white and bearing a gold arrowhead (point up), above the wavy bars a white castle (masoned and embattled gold) with three white towers each tower with three merlons and each having one black window, the middle tower lower than the other two, and in the center a black gateway behind the upper portion of the arrowhead.
The hexagon symbolizes the Group's six battle honors in World War II: Sicily (with arrowhead), Naples-Foggia, Anzio, Rome-Arno, North Apennines and Po Valley. The castle is a symbol of engineering achievement while the three towers with the nine merlons allude to the numerical designation of the unit. The wavy bars surmounted by the arrowhead refer to the unit's assault landing at Sicily. Red, white and green are used as the national colors of Italy. Scarlet and white are colors used by Engineer units.
The distinctive unit insignia was approved on 2 July 1970.