Description/Blazon
<p>Shield
Argent, a bend archy in the colors of the rainbow (Gules, Or and Azure) between in chief a prickly pear cactus and in base a palm tree on a mound Proper.
Crest
The crest is that for the regiments and separate battalions of the Iowa Army National Guard: On a wreath Argent and Azure a hawk's head erased Proper.
Motto
ON GUARD.
</p><p>Symbolism
Shield
The shield is white, the old Infantry color. The bend archy in the form of a rainbow shows the service of the Regiment in World War I in the 42d Division. The cactus represents the Mexican Border service and the palm tree the Philippine service.
Crest
The crest is that of the Iowa Army National Guard.
</p><p>Background
</p>
The coat of arms was approved on 28 July 1931.
US Army Institute of Heraldry
1931-07-28
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