Description/Blazon
<p>Shield
Azure, a closet between two wavy barrulets, surmounted by a pairle, Argent; overall the old insignia of the First Regiment of Infantry, Illinois National Guard, (wheel within a diamond) Proper; in chief four fleurs-de-lis, three and one, of the second.
Crest
That for the regiments and separate battalions of the Illinois Army National Guard: On a wreath of the colors Argent and Azure, upon a grassy field the blockhouse of old Fort Dearborn Proper.
Motto
DUCIT AMOR PATRIAE (Led By Love Of Country).
</p><p>Symbolism
Shield
The shield is blue ? the present Infantry color, and the main charges are silver or white ? the old Infantry facing color. The pairle is taken from the Chicago seal: the first wavy barrulets represents Spanish-American War service, the closet Mexican Border duty, and the second wavy barrulets the second time the organization was in Federal service overseas. The four fleurs-de-lis represent the engagements during World War I. The charge in the fess point is the insignia of the old First Regiment of Infantry, Illinois National Guard.
Crest
The crest is that of the Illinois Army National Guard.
</p><p>Background
</p>
The coat of arms was approved on 19 April 1927.
TIOH
1927-04-19
<a rel="nofollow" class="external text" href="https://web.archive.org/web/20161205150810/http://www.tioh.hqda.pentagon.mil/Catalog/HeraldryMulti.aspx?CategoryId=8632&amp;grp=2&amp;menu=Uniformed%20Services">TIOH</a>