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.
Machine Gun 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 “M. G.” in the lower angle.