A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a red heraldic mountain surmounted by two Philippine Island white bladed machetes saltirewise with gold grips in base enclosing a blue arrowhead bearing a seven-pointed white star all between two wavy blue bars and all above a red scroll inscribed "THEY RELY ON US" in gold letters.
Scarlet and buff (gold) are the colors used for Support units, and scarlet and white are the colors of the Alabama State flag. The colors blue and white refer to the origin of the unit as Infantry while the heraldic red mountain, suggested by "Red Mountain" in Birmingham denotes the homesite of the organization. The seven-pointed white star, taken from the flag of Australia, refers to the Australian administered island of New Guinea and the arrowhead denotes the unit's assault landing there during World War II. The Philippine machetes symbolize the Southern Philippine Campaign and the colors blue, white and red together represent the Republic of the Philippines Presidential Unit Citation awarded the unit.
The distinctive unit insignia was originally approved for the 167th Support Brigade on 12 June 1970. It was redesignated for the 167th Support Command on 4 August 1976. The insignia was redesignated effective 16 September 2006, for the 167th Sustainment Command with the description updated.