Shield
Sable, four bendlets wavy between an oak tree eradicated and the devil of Chateau-de-Diable all Argent.
Crest
That for the regiments and separate battalions of the Army Reserve: From a wreath Argent and Sable, the Lexington Minute Man Proper. The statue of the Minute Man, Captain John Parker (H.H. Kitson, sculptor), stands on the common in Lexington, Massachusetts.
Motto
SECOND TO NONE.
Shield
The bendlets represent the four rivers, Vesle, Aisne, Aire and Meuse; the devil, the Chateau-de-Diable; the oak tree, the Argonne.
Crest
The crest is that of the U.S. Army Reserve.
The coat of arms was originally approved for the 305th Regiment Infantry, Organized Reserves on 14 Jun 1924. It was amended to withdraw the "Organized Reserves" from the designation and to delete the Organized Reserves' crest from the coat of arms on 10 Aug 1959. On 7 Aug 1970 the coat of arms was amended to reinstate the crest of the Army Reserve for the 305th Infantry Regiment. The coat of arms was redesignated for the 305th Regiment on 12 Apr 1999.