Constituted 7 November 1967 in the Regular Army and subsequently activated 1 December 1967, the 10th Psychological Operations Battalion took part in ten campaigns in the Vietnam conflict before it was inactivated on 17 April 1971. Over that period, it was honored with a Meritorious Unit Commendation and awarded the Republic of Vietnam Civil Action Honor Medal, First Class.
On 30 October 1975, the Battalion was redesignated as Headquarters and Headquarters Company, 10th Psychological Operations Battalion and withdrawn from the Regular Army and allotted to the Army Reserve. Based in St. Louis, the Battalion comprises the HHC and three Psychological Operations Companies and reports to the 7th Psychological Operations Group.
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The 10th PsyOps Battalions Latin motto, POTESTAS PERSUASONIS (“Power Of Persuasion”), is found on its unit crest, officially known as a Distinctive Unit Insignia or DUI for short.
The 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 (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.
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.