A silver colored metal and enamel insignia 1 1/8 inches (2.86 cm) in height consisting of a silver rock issuing from the inner arc of a blue annulet inscribed with the words "NOUS RESTERONS LA" in silver letters; on the rock and surmounting the upper part of the annulet a silver wyvern winged blue bearing thereon three silver diagonal bands.
The rock, inscription and wyvern refer to the two designations by which men of the 3d Infantry Division are popularly known; i.e., "Marne Men" and "Blue and White Devils". The rock represents the Division's firm stand against the German offensive at the Marne River during World War I. It was there that it became known as the "Rock of the Marne" and there that the Commanding Officer, General Joseph Dickman, stated "Nous Resterous La". The wyvern, a heraldic form of the devil, bears the Division's blue and white stripes on its wing in commemoration of the Division's action at Anzio, Italy, during World War II where they were called "Blue and White Devils" by the enemy.
The insignia was approved on 27 August 1965.