On a shield 3 inches (7.62 cm) in height and 2 inches (5.08 cm) in width overall and curved at the top, within a 1/8 inch (.32 cm) scarlet border seven alternating scarlet and white vertical stripes, overall a black saltire charged in center with a yellow castle tower having two rows of three black windows each.
Scarlet and white are the colors of the Engineer Corps. The black saltire refers to the military symbol for Brigades and the gold castle tower is suggested by the branch insignia of the Corps of Engineers. The seven scarlet and white stripes further allude to the unit's numerical designation.
The shoulder sleeve insignia was approved on 24 May 1966. (TIOH Dwg. No. A-1-415)