A silver color metal and enamel device 1 3/16 inches (3.02 cm) in height consisting of a yellow eight-pointed sun on a triangular blue field contained below by two silver arcs and above by a silver carpenters square; issuant vertically above the square on a yellow disc three red bamboo sections enclosed by a circular red scroll inscribed with the words STRENGTH AND DRIVE in silver letters.
Scarlet and silver (white) are the colors used by the Corps of Engineers. The blue area in base represents service in the Pacific theater of World War II and the two silver bars denote participation in the campaigns of New Guinea and Luzon. The sun symbol, adapted from the Philippine Presidential Unit Citation, and the square alludes to the Groups construction mission. The red bamboo rods on the yellow field refer to the flag of the Republic of Vietnam where the unit is now serving and to the award of the Meritorious Unit Commendation.
The distinctive unit insignia was approved on 20 June 1969.