A gold plated metal and enamel insignia, 2 inches (5.08 cm) in width and 1 51/64 inches (4.56 cm) in height, consisting of a flaming torch above a breast plate and upon in front of a rattlesnake on a green background, grasping in its mouth at upper right and with its tail at upper left, the ends of an encircling scroll inscribed ''THIS WE'LL DEFEND'' in black letters, between 13 black stars, 7 on the left and 6 on the right.

Some elements of the design are adapted from the United States Army Flag and the Seal of the Department of the Army (a snake, the motto and scroll and the armor). Also contained in the design is the torch of liberty and 13 stars.

See Army Regulation 600-8-22, Military Awards.

The metal badge was first approved as the distinctive insignia for wear by trainer personnel assigned to U.S. Army Training Activities on 15 January 1958. The insignia for Trainer Personnel was authorized for wear by drill sergeants assigned to training commands in 1964. At this time, the insignia was authorized for wear in metal and embroidered form. The embroidered version was manufactured in full color (yellow, green and black) and subdued. In 1969, policy was changed and it was mandatory to wear subdued insignia on field clothing. At this time, the Drill Sergeant Identification Badge, embroidered, was no longer authorized for wear in full color.

A subdued badge is authorized in a flat black metal finish.