A white shield-shaped insignia with a white arced scroll attached above the shield, all edged with a 1/8 inch (.32 cm) yellow border, the overall dimensions 3 1/8 inch (7.94 cm) in height and 2 5/8 inches (6.67 cm) in width; on the shield, the head of an Indian in profile, gold brown with black hair and details, garbed in full headdress, white feathers with red tips, black outlines and details, that portion above the hairline yellow and red, detailed black; on the scroll the inscription "ERWIN" in red letters 5/16 inch (.79 cm) in height.
The shoulder sleeve insignia originally authorized 23 June 1980 was amended to add subdued colors and metric measurements on 17 September 1991. (TIOH Drawing Number A-10J-219)