U.S. ARMY ADJUTANT GENERAL CENTER / RESERVE COMPONENTS P&A CENTER UNIT CREST (DUI)

Thanks to organizational and administrative restructuring in the 1960s, some of the personnel management functions of the Office of the Adjutant General were handed off to other departments. This trend continued in the 1970s with the establishment of the Army Military Personnel Center, today known as the Total Army Personnel Command, in 1972.
 
According to the January 1988 edition of Army: The Magazine of Landpower, this led to the establishment of the Adjutant General's Center in 1973 with a mission "to collect and rationalize the remaining functions of the office, which then included general administration, archival services, postal matters, and morale, recreation, and welfare (MWR). Most of the MWR functions were transferred to the new Army Community and Family Support Center at the end of 1984.”
 
In 1985, responsibilities for reserve personnel management were transferred to MILPERCEN and the Reserve Components Personnel and Administration (P&A) Center, overseen by the the Office of the Chief Army Reserve.

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.

For Enlisted personnel, the insignia is 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.