Shield
Per bend Or and Azure on the last a dragon with a death's head salient Or emitting from the mouth fire and smoke Proper.
Crest
From a wreath Or and Azure, five mounts, two upon three, Vert irradiated Or and Argent charged with a cross paty Or superimposed by a bezant bearing a fleur-de-lis Azure, rising from between the mounts two demi-spears pilewise Proper.
Motto
CAVE FUMO (Beware, the Fumes).
Shield
The cobalt blue and golden yellow of the Chemical Warfare Service with a death's head, symbolizes the function of the battalion. Dragons are traditionally held to breathe fire and fumes.
Crest
Chemistry is represented by the green mounts, standing respectively for air, fire and earth, ancient symbols of chemistry. The fourth element, water, is symbolized by cobalt blue, the color of the fleur-de-lis. The cross symbolizes the French Croix-de-Guerre awarded the Battalion. The five mounts recall the mountainous region of Italy where the Battalion saw action during World War II, and represent the five campaigns in which the unit participated. The two Roman spears refer again to the region and recall the two major assaults and amphibious operations in which the organization participated. Golden yellow and cobalt blue are the colors traditionally associated with the Chemical Corps. The gold and silver burst behind the mounts represents a mortar attack.
The coat of arms was originally approved on 6 November 1942. It was amended to include a crest on 7 December 1993.