The heraldry of the Old Guard is symbolic of its history and record.

Based on precedents adopted as early as 1911, the shield contains a hill with a fortification at its summit in the national colors of Mexico, symbolic of service in the Mexican-American War of 1846-1847, as is the bandmaster's baton (called the Chapultepec Baton) on the far left corner. The three white Maltese crosses symbolize service in the American Civil War in the 5th Corps, Army of the Potomac.

The 18th century military cocked hat symbolizes the antiquity of the unit. The

bayonet is emblematic of the trust of the government in granting its oldest active Army unit the right to march with bayonets fixed. The motto, "Noli Me Tangere," meaning "Touch me Not," is shared with other older units.

Major Charles K. Gardner of the 3d U.S. Infantry first suggested the practice of using letters of the alphabet to indicate companies in a regiment in 1816. The Infantry branch adopted the crossed rifles insignia in 1875.

The Old Guard Museum is a modern facility modeled on a traditional regimental museum built inside a turn-of-the century barracks on historic Fort Myer, Virginia. Shown here is the special purpose ceremonial uniform (also adopted for bands) used between 1958 and 1973. The distinctive braided ceremonial chin strap and trefoil braid make this Ceremonial Service Cap instantly recognizable.

This khaki service cap pictured in this photo belonged to General Douglas MacArthur. It was presented to the Old Guard by his widow, in appreciation of the Old Guard's service in the general's funeral.

From early days, the U.S. Army traditionally used the symbolism of reversed boots in a fallen leader's saddle, said to be based on medieval European precedent, for military funerals.

The practice continues today. The saddle on the ceremonially caparisoned horse also carries the last pattern of sword adopted for use by Army officers.

Swords are now symbols of authority in the military services, rather than weapons. The last dress sword adopted for the us of officers in the U.S. Army was this pattern of 1902. They are still used in ceremonies and on some formal occasions.