The 510th Personnel Services Battalion Distinctive Unit Insignia, also called a DUI or unit crest, was approved on 14 October 1994. Besides their association the flag, the colors of the insignia—dark blue, red, and white—have their own meaning as they relate to the organization and its branch of service. Red and dark blue, for example, are colors that have long been associated with Personnel units, with red denoting the valor and sacrifice of the troops served by the organization and white representing the integrity and purity of purpose of the unit’s personnel.
A trio of red escutcheons (shields) are references to wartime service in three different conflicts: World War II, Korea, and Vietnam. The jagged indentations of the chief (upper third of shield) are stylized mountains of Italy, the location where the unit experienced its baptism by fire. Two bars ending in arrowheads and interwoven by an annulet symbolize the unit and its service to fellow Army personnel.
During World War II, the unit was called the 510th Replacement Company and took part in the North Apennines, Po Valley, and Rome-Arno campaigns. It served under the same designation in Korea, where its service in five campaigns yielded four Meritorious Unit Commendations; in Vietnam, the unit served in thirteen campaigns and added another Meritorious Unit Commendation to its list of military decorations.
“Victory Through Service” was the motto of the 510th Personnel Services Battalion, which was reorganized and redesignated 17 September 2006 as the 510th Personnel Company.
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Distinctive Unit Insignias are 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 (ASU, 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.
More 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.