The Army Nurse Officer insignia, worn on each point of the uniform collar, displays a golden caduceus, which has historically been an emblem of physicians because it symbolizes knowledge, wisdom, promptness, and various aspects of medical skill. The insignia design specifies the Nurse branch via the addition of a black enamel N outlined in gold metal. This insignia is hallmarked by the U.S. Institute of Heraldry, approved for wear, and sold as a pair. The Army Nurse Officer Insignia is 100% USA made and comes with a double pin clutch back.