Argent, a bend wavy Azure between a falcon close and a cactus Proper.
That for the regiments and separate battalions of the Ohio Army National Guard: From a wreath Argent and Azure, a sheaf of seventeen arrows Argent bound by a sprig of buckeye (aesculus glabra) fructed Proper (two leaves bursting burr).
The service of the original organization, the 145th Infantry Regiment is indicated by the white shield for Infantry. The falcon from the arms of Montfaucon, France and the wavy bend for the Escaut (Scheldt) River symbolize the most outstanding feats of the regiment during World War I. The giant cactus represents service on the Mexican border.
The crest is that of the Ohio Army National Guard.
The coat of arms was originally approved for the 145th Infantry Regiment on 17 July 1928. It was redesignated for the 145th Regiment with the blazon and symbolism revised on 15 April 1997. The insignia was redesignated effective 1 September 2007, for the 145th Armored Regiment with the symbolism revised.