Insignia Description
A gold color metal and enamel device 1 1/4 inches (3.18cm) in height overall consisting of a shield blazoned: Azure, two bars gemel wavy Argent, a shepherd's crook in pale Or between two fleurs-de-lis of the last. Attached below is a Blue scroll inscribed "SUIVEZ-MOI" in Gold letters.

Symbolism
These arms are founded on the history of the regiment. Each bar gemel represents the two rivers between which the regiments fought; first, between the Vesle and the Aisne; and the second bar, the Aire and the Meuse. The most brilliant action of the regiment was in the taking if the town of St Juvin on the Aire River on the 14th of October 1918 (St. Juvin was a hermit shepherd), and the shepherd's crook represents this action. The fleurs-de-lis indicate the tow major offensives of the regiment. The motto was adopted at Camp Upton, New York, upon the organization of the regiment in October 1917, and was taken as typical of the work of the regiment while at Camp Upton. The 306th Infantry was organized at Camp Upton, New York, as a unit of the 77th Division in 1917. It served overseas with the 77th Division and took part in the Meuse-Argonne and Oise-Aisne operations, and held sectors in Champagne and Lorraine.

History
The distinctive unit insignia was originally approved for the 306th Regiment Infantry, Organized Reserves on 25 Aug 1931. It was amended to withdraw "Organized Reserves" from the designation on 10 Aug 1959. On 28 Jul 1970 the insignia was amended to revise the symbolism. The insignia was redesignated for the 306th Regiment on 8 Apr 1999.

Source: The US Army Institute of Heraldry