_Band Musician_—A lyre with the numbers or letters surcharged upon the face indicating the corps or regiment to which the band belongs; for the Coast Artillery the number of the band, for Engineer bands a castle, for Infantry, Cavalry and Field Artillery bands the number of the regiment, for the Military Academy band the letters “M. A.,” for bands of the Native Troops in the Philippines the letter “P,” for the band of the Porto Rico regiment the letters “P. R.,” for bands of Disciplinary Barracks the letters “D. B.” and for the Recruiting Service bands the letters “R. S.” _Cavalry_—Two sabers in their scabbards crossed with the edges up, with the number of the regiment in the upper angle and the letter of the troops in the lower angle. _Coast Artillery_—Two cannon crossed with the muzzles up, without the number of the company. _Field Artillery_—Two cannon crossed with the muzzles up, the number of the regiment in the upper angle and the letter of the battery in the lower angle. _General Recruiting Service._—The letters “R. S.” enclosed in a wreath with number of company below. _Electricians_—A symbol representing forked lightning. _Engineers_—The turretted castle device of the Engineer Corps with the number of the regiment above it and the letter of the company on the face of the device. _Hospital Corps_—The caduceus device. _Infantry_—Two rifles crossed with muzzles up, the number of the regiment in the upper angle and the letter of the company in the lower angle, for the Porto Rico regiment the letters “P. R.” in the upper angle and for Philippine Native Troops the letter “P.” in the upper angle. _Ordnance Corps_—A spherical shell flaming at the top. _Quartermaster Corps_—A sword and key crossed on a wheel surmounted by an eagle. _Signal Corps_—Two signal flags crossed with a torch. _Service Schools and Military Academy Detachments_—Two disks with raised rim encircling on one a hammer and quill crossed and one the letters “U. S.” _U. S. Military Academy Artillery Detachment_—Two cannon crossed with the letters “M. A.” in the upper angle and “D. E. T.” in the lower angle. _U. S. Military Academy Cavalry Detachment_—Two sabres in their scabbards crossed with the letters “M. A.” in the upper angle and “D. E. T.” in the lower angle. _U. S. Military Academy Engineer Detachment_—The turretted castle device of the Engineer Corps with the letters “M. A.” above it and “D. E. T.” across the face. _Headquarters Company, Infantry, Cavalry and Field Artillery_—The distinctive insignia of the regiment to which it belongs with the number of the regiment in the upper angle and the letters “H. Q.” in the lower angle.