Insignia Description
A silver color metal and enamel device 1 3/16 inches (3.02cm) in height overall consisting of a silver knight’s helmet facing front and bearing a crest of three ostrich plumes one orange between two white all upon a field of four lightning flashes pilewise and contained on the two sides and bottom by a blue serpentine scroll inscribed with silver letters with the motto "VOICE OF FREEDOM," the scroll ending at either side next to the white plumes.

Symbolism
Orange and white are the colors of the Signal Corps. The function of signal communications is represented by the background of flashes. The knight’s orange and white plumed helmet between on the wavy blue band, simulating a winding river, is a reference to the Brigade’s unofficial "Order of the Orange and White Knights of the Rhine."

History
The distinctive unit insignia was approved on 18 Mar 1970. It was amended on 24 Apr 1998, to change the motto.

Source: The US Army Institute of Heraldry