Sergeant First Class, Signal Corps—Chevron of three stripes with one arc of a circle below and the Signal Corps insignia in the center. Electrician Sergeant, First Class, Coast Artillery—Chevron of three stripes with a wreath below it and a device representing forked lightning in the center and a short stripe between the wreath and the lightning. Assistant Engineer, Coast Artillery—A device representing an engine governor with a wreath below it. Master Gunner, Coast Artillery—A projectile placed vertically with a wreath below it and a star above it. Band Sergeant and Assistant Leader of U. S. Military Academy Band—Chevron of three stripes and two arcs of a circle below them and a lyre in the center. Assistant Band Leader—Chevron of three stripes and one arc of a circle below them and a trumpet in the center. Sergeant Bugler—Chevron of three stripes with a bugle below them. Electrician Sergeant Second Class, Coast Artillery—Chevron of three stripes with a wreath below them and a device representing forked lightning in the center. Radio Sergeant—Chevron of three stripes with a device representing forked lightning below them. Color Sergeant—Chevron of three stripes with a star below. Sergeant—Chevron of three bars. Company Supply Sergeant—Chevron of three stripes with one horizontal bar below them. Mess Sergeant—Chevron of three stripes with a crescent below them. Stable Sergeant—Chevron of three stripes with a horse’s head below them. Fireman, Coast Artillery—Chevron of one stripe with one arc of a circle below it and a device representing the governor of an engine in the center. Corporal—Chevron of two stripes. Lance Corporal (Acting Corporal)—Chevron of one stripe. Chief Mechanic—Two hammers crossed with a wreath below them. Cook—A device representing a cook’s hat. Artificer—Two hammers crossed. Horseshoer—A horseshoe, toe up. Mechanic—Two hammers crossed. Saddler—A saddler’s round knife, edge up. Wagoner—An eight spoke wheel. Musician—A lyre. Trumpeter—A bugle. First class Private of Engineers—The castle insignia of the Engineer Corps. First class Private, Signal Corps—The Signal Corps insignia, two crossed flags and a vertical torch. First class Private Ordnance Corps—The Ordnance Corps insignia, a bursting spherical shell. First class Private Hospital Corps—The Hospital Corps insignia, a caduceus. First class Private, Quartermaster Corps—The insignia of the Quartermaster Corps. Casemate Electrician, Coast Artillery—A mine case with a bar below it, enclosed in a circle. Badge for Excellence at Target Practice, Coast Artillery—The figure “1.” Chief Planter, Coast Artillery—A mine case enclosed in a circle.