A gold color metal and enamel device 1 1/8 inches (2.86cm) in height overall consisting of a king chess piece of white enamel on a black enamel area enclosed laterally by two blue and white checky squares of nine pieces each, five blue and four white, and arched to base passing behind the lower portion of the chess piece two bars, the inner green and the other red, both terminating at the checky squares, and arched across the top a gold scroll bearing "CHECKMATE" in black letters.
The king chess piece denotes authority and leadership and relates to the command aspects of the unit's mission. The blue and white checks on the black area refer to the arms of the city of Pittsburgh, Pennsylvania, the original home of the previous organization, and to the shoulder sleeve insignia of the 99th Infantry Division. The dual nine number of checks relates to the former and present numerical designation of the organization. Green and red are references to the colors of the Belgium Fourragre awarded the original unit for the Ardennes-Alsace and Central Europe Campaigns during World War II. The Rhineland Campaign is referred to by the colors from the Provencal Arms: green, white (silver), and black.
The distinctive unit insignia was originally authorized for the 99th U. S. Army Reserve Command on 13 May 1970. It was reassigned and authorized for the U.S. Army 99th Regional Support Command on 16 April 1996. The Insignia was redesignated for the U.S. Army 99th Regional Readiness Command effective 16 July 2003. It was redesignated effective 17 September 2008, for the 99th Regional Support Command.