Also known as a unit crest or DUI, a Distinctive Unit Insignia is worn by all Soldiers (except General Officers) in units that have been
authorized to be issued the device. It is worn centered on the shoulder loops of the Army Green Service Uniform (AGSU) and the blue Army Service Uniform (Enlisted only) with the base of the insignia toward the outside shoulder seam. DUIs are not worn on the Dress variations of either uniform, however.
Enlisted personnel wear the insignia centered on a shoulder loop by placing it an equal distance from the outside shoulder seam to the outside edge of the shoulder-loop button. Officers (except Generals) wearing grade insignia on the shoulder loops center the DUI by placing it an equal distance between the inside edge of the grade insignia and the outside edge of the button.
Full guidance on wear of the DUI is found in DA Pamphlet 670-1,
Section 21-22, "Distinctive unit insignia" and 21–3(d) and (e),
"Beret" and
"Garrison Cap," respectively.
♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦ ♦
The 10th Field Artillery Regiment was originally constituted as the 10th Field Artillery in the Regular Arm on 1 July 1916. It was subsequently organized on 1 June 1917 in Arizona and on 12 November 1917 assigned to the 3rd Division. Deployed to France during World War II, the Regiment was a part of the Division’s 3rd Field Artillery Brigade, and in July 1918 fought in support of the Division’s 38th Infantry Regiment, 6th Infantry Brigade as it withstood the last major German offensive at the 2nd Battle of the Marne. Holding ground against overwhelming numbers, the Division and other units, including the 38th Infantry, were nicknamed “The Rock of the Marne.”
For its role in supporting the 38th Infantry Regiment, the 10th Field Artillery earned the nickname “The Rock’s Support,” which in turned played a huge factor in the design of he 10th Field Artillery Regiment Distinctive Unit Insignia, also called a unit crest. The insignia consists of a red shield with two crossed cannons—a common image in Field Artillery heraldry indicating the unit’s primary function—directly underneath a rock to support it. A canton (square field) in the upper shield is taken from the crest of the coat of arms of the 6th Artillery Regiment, reflecting the fact that the 10th Field Artillery Regiment was originally formed through transfer of Soldiers from that Regiment.
The 10th Field Artillery Regiment is inactivated in December 2015 following the inactivation of the 3rd Infantry Division in which the Regiment’s only active battalion, the 1st, was serving.