A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of eight lozenges radial and conjoined from center of alternating buff and blue, all above and within a wavy blue scroll, lined gold, ends reversed and split and terminating on the lower side of the upper blue lozenges inscribed "THE USUAL UNUSUALLY WELL" in gold lettering.
Buff (yellow) and scarlet are traditional colors for Support units. The buff lozenge and the blue field of the flag of Delaware were used as the basis of the design to form a star, to suggest leadership and refer to the unit's home state when activated. A lozenge further bears the meaning of constancy. The buff lozenge at the cardinal points represents the four classes of supplies received, stored, issued and distributed by the organization, and the blue lozenges represent the Reserve aspect of the unit. The wavy scroll simulates the symbol for flowing liquid and it is used to allude to the petroleum and decontamination services; it also refers to the Nanticoke River at Seaford, the homesite of the 275th Supply and Service Battalion.
The distinctive unit insignia was originally approved for the 275th Supply and Service Battalion on 30 January 1970. It was redesignated effective 16 September 2006, for the 275th Support Battalion with the description and symbolism updated.