Shield
Party per chevron wavy Azure and Argent in dexter chief a cross patte of the second in sinister chief a sea lion with sword in dexter paw of the like langued Gules in base a northern hemisphere with a transport in each ocean both sailing from east to west, all Proper.
Crest
On a wreath of the colors Argent and Azure a fleur-de-lis in front of two crossed arrows of the first surmounted palewise by a sword-breaker with seven barbs Sable charged at the hilt with a taeguk Proper all in front of and within an open laurel wreath Vert.
Motto
WE SERVE.
Shield
The shield is blue and white, the present and old Infantry colors. Civil War service is indicated by the white cross of the V Corps, and Philippine Insurrection service by the sea lion taken from the seal of Manila. The Mont Blanc operation of October 1918 in World War I is commemorated by the outline of the lower half of the shield. The 23d Infantry has the unique distinction of being the first American regiment to circumnavigate the globe and this accomplishment is indicated in the base of the shield.
Crest
The seven barbs of the sword-breaker (a medieval close combat weapon) and the red and blue taeguk upon its hilt are symbolic of the seven Presidential Unit Citations awarded to the unit in Europe during World War II and in the Korean War. The fleur-de-lis refers to the four awards of the French Croix de Guerre during World War I, three with palm, which are symbolized by the encircling laurel wreath. The arrows allude to participation in the Indian Wars.
The coat of arms was originally approved on 4 May 1922. The original crest was cancelled and a new crest approved with symbolism revised on 28 March 1980.