U.S. Army uniform regulations do not specifically authorize yellow shoulder cords, but local Commanders have the authority to prescribe the wear of branch-colored cords for special events or ceremonies.Yellow has been the color of the Armor Corps since 1951, when the branch was officially assigned the color follow the disestablishment of Cavalry as a basic branch. Similar to branch-colored scarves, branch-colored shoulder cords are provided at no cost to personnel when they are prescribed by Commanders.
Yellow shoulder cords are also worn by members of a variety of military, paramilitary, and civilian organizations, usually as part of a ceremonial dress uniform or as an accouterment that reflects special achievement or specific duties. The U.S. Naval Sea Cadet Corps Manual suggests yellow shoulder cords for members serving as Assistant Recruit Division/Company Commanders, but this is not mandatory. Sea Cadets wear shoulder cords on the left shoulder, where they are pinned at the upper seam of the shoulder and sleeve.