The United States Army, Japan was created on 1 July 1957 when the United States reorganized the U.S. Army Forces Far East and Eighth Army to create United States Army Pacific and United States Army, Japan as one of its major subordinate commands. Today, United States Army, Japan is a major subordinate command of United States Army Pacific, the U.S. Army component of United States Indo-Pacific Command (USINDOPACOM), one of the country’s eleven Unified Combatant Commands. U.S. Army Japan is also a component of United States Forces Japan, a subordinate unified command of USINDOPACOM.
Mt. Fujiyama, one of the most recognizable peaks in the world, is employed for the Distinctive Unit Insignia (DUI), or unit crest, of United States Army, Japan for precisely that reason: It immediately denotes the organization’s home location and area of operation. It was approved on 13 February 1975, nearly a quarter of a century after the Army’s Shoulder Sleeve Insignia was originally approved on 5 September 1952.
The motto of United States Army, Japan is OMNIA FIERI POTEST, a Latin phrase that roughly translates into English as "All Things Are Possible" or "Everything Is Possible."
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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 (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.
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.