Shield
Per chevron Sable and ermine, a chevron engrailed counterchanged, in chief three billets palewise Argent and in base a lion rampant Or armed and langued Gules.
Crest
That for the regiments and separate battalions of the Ohio Army National Guard: On a wreath of the colors Argent and Sable, a sheaf of seventeen arrows bound by a sprig of buckeye fructed Proper (Aesculus glabra, two leaves with bursting burr).
Motto
BELLO AC PACE PARATUS (Prepared in Peace and War).
Shield
The field is taken from the coat of arms of General Moses Cleveland, who founded the City of Cleveland and who, also, on August 2, 1779, was commissioned by Congress as Captain of a Company of Sappers and Miners. (Cleveland and its Environs-E.M. Avery). The three billets represent the pillars set in the roads leading up the hill to Montfaucon, which pillars were blown out by this Regiment. (See Morning Reports of Co. A, 112th Engineers, for September 28 and 29, 1918, also Battalion and Regimental war diaries). The lion is the lion of Belgium and served as a reminder that this Regiment, serving under King Albert, helped to free Belgium from the invader. The motto is reminiscent of the Cleveland Grays Semper Paratus and is peculiarly appropriate for a National Guard Regiment.
Crest
The crest is that of the Ohio Army National Guard.
The coat of arms was originally approved for the 112th Engineer Regiment on 7 May 1923. It was redesignated for the 112th Engineer Combat Battalion on 28 April 1945. The insignia was redesignated for the 112th Engineer Battalion on 4 January 1965.