1460. For General Officers and Officers of the General Staff--gilt, convex, with spread eagle and stars, and plain border; large size, seven-eighths of an inch in exterior diameter; small size, one-half inch.
1461. For Officers of the Corps of Engineers--gilt, nine-tenths of an inch in exterior diameter, slightly convex; a raised bright rim, one-thirtieth of an inch wide; device, and eagle holding in his beak a scroll, with the word, "Essayons," a bastion with embrasures in the distance surrounded by water, with a rising sun--the figures to be of dead gold upon a bright field. Small buttons of the same form and device, and fifty-five hundredths of an inch in exterior diameter.
1462. For Officers of the Corps of Topographical Engineers--gilt, seven-eighths of an inch exterior diameter, convex and solid; device, the shield of the United States, occupying one-half the diameter, and the letters T.E. in old English character the other half, small buttons, one-half-inch diameter, device and form the same.
1463. For Officers of the Ordnance Department--gilt, convex, plain border, cross cannon and bombshell, with circular scroll over and across the cannon, containing the words "Ordnance Corps;" large size, seven-eighths of an inch in exterior diameter; small size, one-half inch.
1464. For Officers of Artillery, Infantry, and Calvary--gilt, convex; device, a spread eagle with the letter A, for Artillery--I, for Infantry-- C, for Cavalry, on the shield; large size, seven-eighths of an inch in exterior diameter; small size, one-half inch.
1465. Aides-de-Camp may wear the button of the General Staff, or of their regiment or corps, at their option.
1466. For Medical Cadets--same as for Officers of the General Staff.
1467. For all Enlisted Men--yellow, the same as is used by the Artillery, &c., omitting the letter in the shield.