Shield
Per pale Azure and Or, between a keystone Gules fimbriated Argent (Silver Gray) and a mullet of the first, a demi-sword hilt up of the fourth gripped of the third issuant from a wall embattled in base with a corner facing outward of the fourth charged with a fleur-de-lis of the first.
Crest
That for the regiments and separate battalions of the Pennsylvania Army National Guard: From a wreath Or and Azure, a lion rampant guardant Proper, holding in dexter paw a naked scimitar Argent hilted Or and in sinister an escutcheon Argent on a fess Sable three plates.
Motto
FIGHT THROUGH.
Shield
The shield is blue for Infantry and gold for Armor, the two ancestral regiments of the battalion. Red is the color of valor and sacrifice. The keystone represents the units assignment to the 28th Infantry Division (Mechanized). The castle wall signifies protection, defense, and strength. The sword expresses the warriors combat power and represents the command and control of the different companies that make up the former Special Troops Battalion: Communications, Military Intelligence, and Engineers. The fleur-de-lis commemorates the battle honors earned during World War I and the star is for the honors earned during World War II.
Crest
The crest is that of the Pennsylvania Army National Guard.
The coat of arms was originally approved for the Special Troops Battalion, 55th Brigade Combat Team, 28th Infantry Division on 1 November 2007. It was redesignated effective 1 September 2014, for the 337th Engineer Battalion with the symbolism updated.