ShieldArgent, semé of golpes a weathercock standing on four flashes saltirewise Tenné.
CrestFrom a wreath Argent and Tenné issuing from a palm frond fesswise Proper, a demi-lion rampant Or holding in dexter paw a lightning flash bend sinisterwise Gules fimbriated of the first.
ShieldOrange and white are Signal Corps colors. The purple roundels are symbolic of the grapes typical of the Rhineland and Central Europe, where the battalion was awarded battle honors in World War II. The weathercock, signal of the wind's direction, is used with four lightning flashes to symbolize communications in any quarter of the world.
CrestThe lion, embodiment of strength and courage, commemorates the unit's war service awards in World War II and Southwest Asia. The red lightning flash reflects the color of the Meritorious Unit Commendation awarded to the organization in Southwest Asia. The palm frond is expressive of victory and represents the campaign participation credits earned in Southwest Asia, the Defense of Saudi Arabia and the Liberation and Defense of Kuwait.
The coat of arms was originally approved for the 25th Signal Construction Battalion on 3 July 1952. It was redesignated for the 25th Signal Battalion on 16 December 1955. The insignia was amended to include a crest on 5 March 2004.