A gold color metal and enamel device 1 3/16 inches (3.02 cm) in height consisting of a white tower embattled of five, three merlons and two crenels, the center section bearing a scarlet diagonal band, upper end to the left; the tower surmounting a scarlet annulet the left side inscribed "CONSTRUCTION" and the right "UNLIMITED" in gold letters; in front of the base of the tower a scarlet equilateral triangle bearing a gold sea-lion grasping in his right paw a gold sword; on the battlements of the tower and extending slightly over the upper part of the annulet a gold Oriental dragon.
The design commemorates the combat service of the Group and refers to its mission. The scarlet diagonal band stands for the Alcan Highway, and refers specifically to the blazing of the pioneer road between Fort Nelson, British Columbia, and Watson Lake, Yukon Territory. For this accomplishment, its first assignment, the Group was awarded the scarlet streamer of the Meritorious Unit Commendation. The triangle and sea-lion are taken from the seal of the President of the Philippines. They stand for action during World War II for which the Group was awarded the Philippine Presidential Unit Citation. The Oriental dragon, symbol of nobility and power, descends from the sky on propitious occasions as a sign of good omen and special favor. The gold dragon stands for illustrious service in the Vietnam Conflict, service for which the Group has twice been cited for exceptionally meritorious achievement. The embattled tower and the diagonal band refer to the Group's mission, i.e., to design, plan and supervise the construction of military installations and routes of communications. The colors scarlet and white are for the Corps of Engineers.
The distinctive unit insignia was approved on 19 June 1969.