Insignia Description
A Silver color metal and enamel device 1 1/8 inches (2.86 cm) in height consisting of shield blazoned: Tenné, on a bend Argent four telegraph poles in pale cross arm normal to bend Sable. Attached below the shield a Silver scroll inscribed "SEMPER CONSTANS" in Black letters.

Symbolism
Orange and white are the colors traditionally associated with the Signal Corps. The bend is taken from the arms of Lorraine and St. Mihiel and represents two campaigns for which the unit was awarded streamers. The four telegraph poles represent the four engagements of the battalion during World War I. The motto translates to "Always Constant."

History
The distinctive unit insignia was approved on 11 July 1926.

Source: The US Army Institute of Heraldry