Shield.  Per chevron reversed Sanguine and Argent, in chief the skull and horns of a longhorn steer of the second, in base a conventionalized poppy and a fleur-de-lis of the first.

Crest.  That for the regiments of the Ohio National Guard: On a wreath of the colors Argent and Sanguine a sheaf of seventeen arrows of the first bound by a sprig of buckeye fructed Proper.

Shield.  Maroon and white are the colors of the Medical Department.  The skull and horns of the Texas Longhorn represent service on the Mexican Border, and the poppy and fleur-de-lis symbolize service in Flanders and in France, respectively, during World War I.

Motto. The motto "AUXILIUM SEMPER ADEST" translates to "Help Always Ready."

The coat of arms was originally approved on 16 January 1968 and cancelled on 7 October 1974. The coat of arms was redesignated for the 112th Medical Battalion effective 01 September 2023.

A silver color metal and enamel device 1 inch (2.54 cm) in height overall consisting of a rectangular shield divided per chevron reversed, maroon above white, on the maroon portion the skull and horns of a Texas Longhorn steer in silver; on the white portion a conventionalized poppy and fleur-de-lis both of maroon.  Attached below the shield a maroon arced segmented scroll inscribed "AUXILIUM SEMPER ADEST" in silver letters.

Maroon and white are the colors of the Medical Department.  The skull and horns of the Texas Longhorn represent service on the Mexican Border, and the poppy and fleur-de-lis symbolize service in Flanders and in France, respectively, during World War I.  The motto translates to "Help Always Ready."

The distinctive unit insignia was originally approved for the 112th Medical Regiment on 3 July 1928.  It was redesignated for the 112th Medical Battalion on 3 September 1943.  It was redesignated for the 112th Medical Group on 25 September 1974.  The insignia was redesignated for the 112th Medical Brigade on 14 August 1975.