The Crest of the 110th Combat Engineer Battalion

The shield and motto of the coat of arms were approved November 15, 1923; amended January 15, 1924.

Shield: Azure seme-de-lis or, a bend gules fimbriated argent in sinister chief an eagle's head erased of the second gorged with a collar sable charged with a Lorraine cross also of the second.

Crest: That is for the regiments of the Missouri National Guard. Motto of the 110th Engineers: GET IT DONE.

Description: The 110th Combat Engineers served during World War I in the Amiens section with the British. The coat of arms of Amiens displayed in a blue field sewn with gold fleurs-de-lis. This also has another significance for the blue field represents the Old 3rd Missouri Infantry and the fleurs-de-lis recalls the Louisiana purchase and thus the home state. The diagonal stripe is for service in the Alsace. The arms of Alsace show a red field with the diagonal strip. The stripe is red edged with white to indicate the Engineers. The eagle's head is for the very hard fighting in the Meuse-Argonne. It is the device of Saint Mihiel, the nearest arms-bearing town.

Distinctive insignia: approved August 3, 1925.