On an oval shaped embroidered item edged with a 1/8 inch (.32cm) orange border, divided diagonally from upper left to lower right, orange over blue, two conjoined diagonal bands blue over orange from upper left to lower right surmounted by a yellow lightning flash on a diagonal from upper right to lower left; 1 3/8 inches (3.49cm) in height and 2 1/4 inches (5.72cm) in width overall. The background trimming was originally approved for the 426th Signal Battalion on 24 Jun 1992. It was redesignated for the 51st Signal Battalion on 14 May 1993