A gold color metal and enamel device 1 1/4 inches (3.18 cm) in height overall consisting of a green mountain of five rounded peaks surmounted by a gold upright millrind with the lower half extending below the base of the mountain and supporting centrally a vertical arrow, with gold head and shaft and red feathers, the shaft passing through the horizontal holding bar and between the arched vertical bars of the millrind, all above a gold scroll forming a wide "V" inscribed with "WE SERVE AND SUPPORT" in green letters.
The millrind alludes to support and the arrow symbolizes the arms and equipment supported as well as supplied by the organization. The wide "V" form of the scroll and the green rounded mountain peaks allude to the State of Vermont.
The distinctive unit insignia was originally approved for the 186th Support Battalion on 15 November 1967. It was rescinded on 1 September 1976. The insignia was reinstated for the 186th Support Battalion with the description and symbolism revised on 25 February 1988.