A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a gold disk bearing a triparted chevron composed of a white chevron between a scarlet one above and a blue one below and in base a white rectangle, vertical axis longer, all encircled by a gold chain; and encircling the sides and base a scarlet scroll bearing the inscription "THE UNBROKEN CHAIN" in gold letters.
The chain refers to the organization's motto. The rectangle depicts a billet, a heraldic symbol which connotes the unit's supply and service capabilities, and the chevron is symbolic of the support mission. The chevrons, one above the other, also refer to the unit's location in the state of New York which has for its motto "EXCELSIOR" (Ever Upward). Additionally, the three chevrons, circular chain and upright rectangle allude to the numerical designation of the Group.
The distinctive unit insignia was originally approved for the 301st Support Brigade on 31 March 1970. It was redesignated for the 301st Support Group on 4 April 1972.