ShieldArgent, five bendlets Gules, on a low mount an oak tree fructed Proper, within a bordure diminished gyronny of eight Azure and Gray.
CrestThat for the regiments and separate battalions of the New Jersey Army National Guard: On a wreath of the colors Argent and Gules, a lion’s head erased Or collared four fusils Gules.
MottoFACIENDUM EST (It Must Be Done).
ShieldThe shield is in the colors of the Corps of Engineers, the tree represents the Meuse-Argonne operations and the bordure recalls the “blue and gray” division.
CrestThe crest is that of the New Jersey Army National Guard.
The coat of arms was originally approved for the 104th Engineer Regiment on 19 June 1924. It was redesignated for the 104th Engineer Battalion on 30 June 1942. It was redesignated for the 104th Armored Engineer Battalion on 2 August 1949. The insignia was redesignated for the 104th Engineer Battalion on 5 July 1961. It was rescinded/cancelled on 2 February 2015.