A Gold color metal and enamel device 1 1/4 inches (3.18 cm) in height overall consisting of a shield blazoned:  Or, a saltire Gules between a rainbow couped Proper (of three bands, Red, Yellow and Blue), an Indian’s head in profile Proper with one feather in topknot of the second and a prickly pear cactus Vert.  Attached below the shield a Gold scroll inscribed “COME WHAT WILL” in Black letters.

The shield is yellow for Cavalry. The saltire is scarlet, the color traditionally associated with Artillery organizations, and represents the unit's service in World War II as an anti-aircraft artillery unit. The rainbow, which is the shoulder sleeve insignia of the 42d Division, indicates service in that Division during World War I; the Indian head represents Indian warfare; and the cactus, Mexican border service.

The distinctive unit insignia was originally approved for the 108th Cavalry Regiment on 1 November 1929.  It was redesignated for the 105th Antiaircraft Artillery Automatic Weapons Battalion on 4 January 1952.  The insignia was redesignated for the 139th Armor Regiment on 29 August 1960.  It was redesignated for the 139th Cavalry Regiment on 19 January 1966.  It was redesignated for the 205th Engineer Battalion on 26 June 1968.  It was rescinded on 2 September 1976.  The insignia was reinstated and redesignated for the 108th Cavalry Regiment on 28 February 1996. The symbolism was amended 13 July 2023.

Shield

Or, a saltire Gules between a rainbow couped Proper (of three bands, Red, Yellow and Blue), an Indian’s head in profile with one feather in topknot and a prickly pear cactus of the last.

Crest

That for the Georgia and Louisiana Army National Guard placed side by side in order in which the states were admitted to the Union:  GEORGIA:  From a wreath Or and Gules, a boar’s head erased Gules, in the mouth an oak branch Vert fructed Or.  LOUISIANA:  From a wreath Or and Gules, a pelican in her piety affronté with three young in nest, Argent, armed and vulned Proper.   

Motto

COME WHAT WILL.

Shield

The shield is yellow for Cavalry. The saltire is scarlet, the color traditionally associated with Artillery organizations, and represents the unit’s service in World War II as an anti-aircraft artillery unit. The rainbow, which is the shoulder sleeve insignia of the 42d Division, indicates service in that Division during World War I; the Indian head represents Indian warfare; and the cactus, Mexican border service.   

Crest

The crests are those of the Georgia Army National Guard and the Louisiana Army National Guard respectively.

The coat of arms was originally approved for the 108th Cavalry Regiment on 1 November 1929.  It was amended to change the wording of the description on 30 June 1930.  It was redesignated for the 105th Antiaircraft Artillery Automatic Weapons Battalion and amended to delete the Georgia National Guard crest on 4 January 1952.  The insignia was redesignated for the 139th Armor Regiment on 29 August 1960.  It was redesignated for the 139th Cavalry Regiment on 19 January 1966.  It was redesignated for the 205th Engineer Battalion on 26 June 1968.  It was rescinded on 2 September 1976.  The insignia was reinstated and redesignated for the 108th Cavalry Regiment and amended to reinstate the crest of the Georgia Army National Guard on 28 February 1996.  The symbolism was amended 13 July 2023.