U.S. ARMY 309TH MILITARY INTELLIGENCE BATTALION UNIT CREST (DUI)

The 309th Military Intelligence Battalion Distinctive Unit Insignia was originally approved for the 309th Army Security Agency Battalion, Army Reserve on 12 February 1959. It was assigned for use by the 325th U.S. Army Security Agency Battalion on 5 August 1959, then was reassigned for use by the 209th Army Security Agency Battalion on 2 August 1965. It was given its current designation on 2 May 1990.

A shield made up of teal blue and silver reflects the organization’s founding in the U.S. Army Security Agency. They key is a symbol of the unit’s mission of ensuring security, while the golden bear’s head on top; of the key is a reference to the state of California, site of the unit’s activation. Two lightning flashes positioned saltirewise (i.e., to form an “X” shape) allude to electricity to emphasize the importance of electronic communications in carrying out unit functions. “Sentinels Of Security” serves as both the unit motto and an apt description of the Battalion’s function.

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 (ASU, Enlisted only) with the base of the insignia toward the outside shoulder seam. 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.

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The 309th Military Intelligence Battalion was first constituted in the Army Reserve as Headquarters and Headquarters Detachment (HHD), 309th Communication and Reconnaissance Battalion on 19 September 1952. Activated on 1 November 1952, the Battalion was reorganized and redesignated with its HHD becoming the Headquarters and Headquarters Company (HHC) on 25 January 1956; nine months later it was redesignated again as the 309th Army Security Agency Battalion on 1 October 1956.

Inactivated in July 1959, the Battalion was reactivated in September 1962 with its HQ at Bell California and its alphabet companies redesignated as numeric (the 518th through the 521st) and starting their own lineages. On 15 July 1986, the Battalions HHC was inactivated, but less than four years later it was redesignated as HHC, 309th Military Intelligence Battalion, withdrawn from the Army Reserve, and allocated to the Regular Army. Its HQ was transferred to the U.S. Army Training and Doctrine Command on 17 August 1990 and activated at its current home at Fort Huachuca, Arizona.

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U.S. ARMY 309TH MILITARY INTELLIGENCE BATTALION UNIT CREST (DUI)