Base Headquarters and 4th Air Base Squadron emblem.  Approved 3 August 1937.  This uni was expanded to become the 4th Air Base Group (later 4th Service Group) and is not related to the 4th Base Headquarters and Air Base Squadron.
<a href="https://en.wikipedia.org/wiki/United_States_Army_Institute_of_Heraldry" class="extiw" title="en:United States Army Institute of Heraldry">en:United States Army Institute of Heraldry</a>
1937-08-03
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