The 30th Combat Sustainment Support Battalion (CSSB) is a Support unit in the Tennessee Army National Guard. While previously serving under the designation 30th Support Battalion (Forward), the unit deployed to Iraq in from 9 September 2008 to 14 July 2009, earning a Meritorious Unit Commendation for its superior performance. It is unclear when the Battalion was given its current designation.
The 30th CSSB is stationed at Humboldt, Tennessee.
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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. DUIs are not worn on the Dress variations of either uniform, however.
VOLUNTARIS ADIUVO LIBERTAS, Latin for “Volunteering To Support Freedom,” forms the base of the 30th CSSB Distinctive Unit Insignia and is a reference to Tennessee’s renown as the “Volunteer State.” The insignia features a shield diagonally divided with a lightning flash; in military heraldry, such a flash typically indicates either some type of Signal or Communications capability or the ability to deploy or strike quickly. An upright dagger suggests military readiness, and the three stars in in the white disc are adapted from the state flag of Tennessee.
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.