A gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall, consisting of a dark blue square one point up voided and interlaced by two diagonally crossed arrows, all upon a red convoluted scroll inscribed "SUPPORT" on the left, "SERVE" at bottom and "DEFEND" on the right, all in gold letters; overall a white quill with gold spines.
Red, white and blue are our National colors. Dark blue and scarlet are the colors traditionally associated with Personnel units; gold alludes to excellence. The white quill represents the individual soldier and the support and service the 18th Personnel Group provides to each. The square, reminiscent of the XVIII Airborne Corps insignia, which the unit supports, is interlaced with two arrows symbolizing the unit's two campaigns in World War II. Arrows, weapons of flight, also highlight the Airborne Corps they serve. The four sides of the square represent loyalty, duty, selfless service, and integrity, which are the elements of the professional Army ethic; and they also represent the four individual values of commitment, competence, candor and courage. The three visible corners of the square point to the purpose of the organization which is to support commanders, serve soldiers and defend the Nation.
The distinctive unit insignia was approved effective 18 September 1990.