A Gold color metal and enamel device 1 1/4 inches (3.18 cm) in height overall consisting of a shield blazoned: Azure, a fess rompu debased Argent, a pile Or, sem-de-lis of the first, with point in break of fess, charged with the shoulder sleeve insignia of the 93d Division Proper (a pellet charged with a French trench helmet, horizon blue, outlined in Gold); in chief, the pile superimposed upon a Roman sword palewise point to base, in dexter and in sinister a prickly pear cactus, all Or. Attached above the shield on a wreath upon a grassy field the blockhouse of old Fort Dearborn, all Or. Attached below and to the sides of the shield a Gold scroll inscribed ONE COUNTRY-ONE FLAG in Black letters.
The shield is blue for Infantry; the white fess rompu (broken) represents the Hindenburg Line, while the 370th Infantry (predecessor unit) is represented by the gold pile (wedge) which broke the line; the seme-de-lis is for the Oise-Aisne Operation which was in that province of France whose arms are a blue field with gold fleurs-de-lis the tinctures on the wedge being reversed so as not to get a blue pile on a blue field; the pellet with the helmet is the shoulder sleeve insignia of the 93d Division and indicates the service of the 370th Infantry as a unit of this Division during World War I, the gold Roman sword is taken from the Spanish War medal for non-combat duty, while the cactus represents duty on the Mexican Border.
The distinctive unit insignia was originally approved for the 8th Infantry Regiment on 9 November 1925. It was redesignated for the 184th Field Artillery Regiment on 28 December 1940. It was redesignated for the 184th Field Artillery Battalion on 6 April 1950. The insignia was redesignated for the 178th Infantry Regiment on 13 June 1961.