_Aiguilettes_ consisting of loops of plaited round gold cord terminating in gilded pencil ornaments are worn with special full dress, full dress, and mess dress by officers of the Staff Departments, and with special full dress, full dress, mess dress, blue undress and white undress uniforms by Aides-de-camp to General officers and Aids on the personal staff of a Flag Officer of the Navy. _Warrant Officers’ Distinctive Insignia._—Marine Gunners wear as a distinctive device a bursting spherical shell three-quarters of an inch in diameter with a flame five-eighths of an inch high made of silver for the blue undress and white undress coats and of dull finish bronze metal for the summer field and winter field coats and the overcoat. Quartermaster Clerks wear the distinctive device of the Quartermaster’s Department, in gold and enamel for the blue and white undress coats and in dull finish bronze for the summer field and winter field coats and the overcoat. These devices are worn on both sides of the collar of the undress and field coats and on the shoulder straps of the overcoat. _Marine Corps Sword._—The sword carried by all officers of the Marine Corps has a steel blade, slightly curved, from twenty-eight to thirty-two inches in length, with a scroll on each side bearing the words “United States Marines.” The grip is of the Mameluke type and is made of white ivory and the guard is a straight bar of gilded metal, the ends terminating in acorn designs. The scabbard is of polished silver with two gilded bands and rings for attaching it to the belt slings and a gilded ferrule at the lower end. _The Belt Plate_ for officers’ full dress belts is of gilt metal, oblong in shape, two and one-eighth inches high by three and one-eighth inches wide, decorated with a silver wreath encircling the Arms of the United States in silver. [Illustration: U. S. Marine Corps swords 1. Commissioned officers 2. Noncommissioned officers] [Illustration: _Photo by Harris & Ewing, Washington, D. C._ U. S. Marine Corps Enlisted men in dress uniform Private First Sergeant] _The Sword Knot_ worn on the hilt of the Marine Officers’ sword is a loop of round cord ending in a tassel, made of gold and scarlet for full dress and of plaited leather for other uniforms. _Buttons._—The Marine Corps buttons bear a design consisting of a foul anchor placed diagonally with an American eagle above it, surrounded by thirteen stars and a narrow circular band. The buttons for blue and white uniforms are of gilded metal and those for the field uniforms and the overcoat are of dull bronze metal. _Spurs_ are worn by all officers when mounted.