Shield
Parti per pale Sable and Sanguine a Maltese cross Argent.
Crest
That for the regiments and separate battalions of the Indiana Army National Guard: On a wreath of the colors Argent and Sable, a demi-lion rampant Argent, holding in dexter paw a laurel branch Vert.
Motto
FIRMITAS ET SANITAS (Strength and Health).
Shield
Maroon and white are colors traditionally associated with the Medical Corps, the branch of service of the parent organization. The white Maltese cross on a black shield is representative of the Knights Hospitallers of Saint John of Jerusalem, an organization formed in Jerusalem during the Crusades in 1118, to attend the sick and wounded. This organization represented the first exclusively military medical unit in history. Black and maroon, with the white Maltese cross surmounted on the shield, signifies the similarity between the duties of the original medical organization and the duties of those which presently exist.
Crest
The crest is that of the Indiana Army National Guard.
The coat of arms was originally approved for the 113th Medical Regiment, Kentucky and Indiana National Guard on 22 March 1924. It was redesignated for the 113th Medical Battalion on 10 October 1942. It was amended to delete the crest of the Kentucky National Guard on 30 January 1959. The insignia was redesignated for the 113th Support Battalion with the symbolism revised on 10 November 1992.