Officially known as a Distinctive Unit Insignia or DUI, the unit crest of the 115th Field Artillery Brigade is a symbol of the organization's long history in the service of the United States. Originally formed in 1888 as a Regiment of cavalry, the Brigade has undergone many changes, but has always striven to serve its country no matter the cost. The crest itself was first authorized for the unit in 1971 when it was designated as the 115th Artillery Group. The crest was redesignated when the unit became the115th Field Artillery Group and was finally given its current designation when the unit was redesignated as the 115th Field Artillery Brigade in 1979.
The colors of scarlet and gold present here are used to designate a unit affiliated with Artillery. The arrows pointing skywards represent multiple things for the Brigade. They first allude to the unit’s origins and continued service in Cheyenne, Wyoming. In more traditional heraldry they represent the readiness for battle. Lastly, they represent the eleven campaigns that the Brigade has fought in since its inception over a hundred years ago. The Brigade earned those eleven arrows in four wars, the Spanish-American War, the Philippine Insurrection, and both World Wars. The two World Wars are represented by the divided fleurs-de-lis, a traditional symbol of France, due to the unit’s actions in the country during the wars. The two wavy bands on either side commemorate the Spanish-American War and the Philippine Insurrection.
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.