Authorised 30 January 1942
A Silver color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Tenné, in base a signal fire and smoke Proper. Attached below the shield a tripartite Silver scroll inscribed "FIRST, LAST, ALWAYS" in Black letters.
The shield is in the colors of the Signal Corps. The bonfire and curling smoke symbolize one of the primitive forms of signaling.
The distinctive unit insignia was originally approved 30 January 1942. It was amended to add the motto on 9 June 1967. It was amended to update the description and add a symbolism on 15 June 2005. Coat of Arms