A gold color metal and enamel device 1 inch (2.54cm) in height overall a Roman numeral "X" blue, superimposed on a Roman Sword in scabbard paleways point down gold, over all a circular band silver fimbriated gold bearing the motto "COURAGE AND FIDELITY" in chief and the date in Roman numerals "MDCCCLV" in base both blue.
The Roman numeral "X" signifies the numerical designation of the regiment; the sword is representative of the dress sabers carried by the officers of the regiment when it was organized. The circular band is indicative of the knapsack straps and waist belts, like those if the French chasseurs-a-pied, worn by the 10th Regiment in the late 1850's. The motto is taken from an address made by Colonel Edmund B. Alexander, first colonel of the regiment, upon the occasion of the presentation of the regimental colors at Carlisle Barracks, Pennsylvania, in September 1855. The Roman numerals "MDCCCLV" signify the year the regiment was constituted and organized.
The distinctive unit insignia was approved on 24 Nov 1920.