A Gold color metal and enamel device 1 1/8 inches (2.86 cm) in height overall consisting of a shield blazoned: Azure (Dark Blue), issuant from base a mountain range Proper surmounted by a bucking bronco with rider Sable. On a sinister canton Gules, two cannons in saltire Or, overall a torch of the last enflamed Proper. Attached below a Red scroll, doubled and inscribed "DISCIPLINA BELLO" in Gold.
The mountain range represents the Grand Tetons, a recognized landmark in Wyoming. The bucking bronco with rider refers to the spirit and fortitude of the soldiers, has been in use by Wyoming units since World War I and also suggests the location of the unit in Wyoming. Blue suggests the Infantry heritage of the Officer Candidate School (OCS) training program. The red canton denotes distinction. The crossed cannons symbolize Field Artillery, the mission of the First Battalion. The torch represents knowledge; alluding to the training mission to prepare noncommissioned officers and officers to be combat ready.
The distinctive unit insignia was approved on 6 April 2005.