A Silver color metal and enamel device 1 1/8 inches (2.86 cm) consisting of a shield and crest blazoned: Shield: Per fess enhanced dancett Argent two pallets Tenn and paley of five per pale Gules and Azure, in base a Korean Bell of the first. Crest: On a wreath of colors (Argent and Tenn) a carabao's head Argent within an annulet Tenn fimbriated of the first charged with six fleurs-de-lis of the like.
The five divisions at the top of the shield, in the orange and white colors of the Signal Corps, stand for the battalion's five World War II battle honors. The ten divisions in base in the red and blue of the Korean Taeguk refer to the battalion's decorations (Two ROK Presidential Unit Citations) awarded for service in that area. The crest is the badge of the old 2d Signal Company. The carabao head is for service during the Philippine Insurrection while the six fleurs-de-lis commemorate the campaigns in France during World War I.
The distinctive unit insignia was originally approved on 16 February 1959. It was amended to correct the symbolism and update the description on 26 March 2002.