Distinctive Unit Insignia. Description: A Silver color and enamel device 1 1/8 inches (2.86 cm) in height consisting of a shield blazoned: Argent, on a saltire per saltire Azure and Gray per cross counterchanged in bend three alerions of the first, between in fess the Spanish War badge of the 1st Division, 2d Corps (a Red four-leaf clover) and a prickly pear cactus, all Proper. Attached below the shield a Blue scroll inscribed "RALLY ROUND THE FLAG" in Silver letters.
             Symbolism: The shield is white for Infantry. The alerions are taken from the coat of arms of the Province of Lorraine, France and represent World War I service in the Meuse-Argonne Offensive. The saltire represents Civil War service; the four-leaf clover, service in the 1st Division, 2d Corps, in the Spanish-American War; and the cactus, Mexican Border service in 1916. The motto is from the statement made by Colonel Kenly of the 1st Maryland, at the battle of Front Royal, Virginia, 23 May 1862, at the most critical moment of the fight.
             Background: The distinctive unit insignia was originally approved for the 1st Regiment Infantry, Maryland National Guard on 14 July 1927. It was redesignated for the 115th Infantry Regiment, Maryland Army National Guard on 3 February 1941. The insignia was amended to add a motto on 14 October 1968.

Coat of Arms.
             Blazon:
                     Shield: Argent, on a saltire per saltire Azure and Gray per cross counterchanged in bend three alerions of the first, between in fess the Spanish War badge of the 1st Division, 2d Corps (a Red four-leaf clover) and a prickly pear cactus, all Proper.
                    Crest: That for the regiments and separate battalions of the Maryland Army National Guard: On a wreath of the colors Argent and Azure, a cross bottony per cross quarterly Gules and Argent.
                     Motto: RALLY ROUND THE FLAG.
             Symbolism:
                     Shield: The shield is white for Infantry. The alerions are taken from the coat of arms of the Province of Lorraine, France and represent World War I service in the Meuse-Argonne Offensive. The saltire represents Civil War service; the four-leaf clover, service in the 1st Division, 2d Corps, in the Spanish-American War; and the cactus, Mexican Border service in 1916. The motto is from the statement made by Colonel Kenly of the 1st Maryland, at the battle of Front Royal, Virginia, 23 May 1862, at the most critical moment of the fight. The canton of the Calvert arms - paly of six pieces Or and Sable a bend counterchanged - has been omitted from the coat of arms of this organization by authority of The Adjutant General of the State of Maryland.
                     Crest: The crest is that of the Maryland Army National Guard.
                     Background: The coat of arms was originally approved for the 1st Regiment Infantry, Maryland National Guard on 15 July 1927. It was amended by addition of information to the symbolism on 9 March 1928. The coat of arms was redesignated for the 115th Infantry Regiment, Maryland Army National Guard on 3 February 1941.