Shield
Azure, a quatrefoil saltirewise Or bearing a quatrefoil of the first charged with a dragon of the second, armed and langued Gules grasping in its dexter paw a hatchet Yellow.
Crest
That for the regiments and separate battalions of the Illinois Army National Guard: From a wreath Or and Azure, upon a grassy field the blockhouse of old Fort Dearborn Proper.
Motto
PRIDE INTEGRITY COURAGE.
Shield
Cobalt blue and golden yellow are the colors traditionally associated with the Chemical Corps. The two quatrefoils allude to the unit's designation. The dragon, symbolically a staunch defender, epitomizes the unit's motto, "PRIDE, INTEGRITY, COURAGE," and has been used historically to identify chemical operations.
Crest
The crest is that of the Illinois Army National Guard.
The coat of arms was approved on 7 January 1997.