Per fess Erminois and Gules, a fess per fess wavy Azure and Or, issuing from base a rising sun of the last.
That for the regiments and separate battalions of the North Dakota Army National Guard: On a wreath of the colors, Or and Gules, a sheaf of three arrows Argent armed and flighted Gules behind a string bow fessways Or with grip of the second Gules.
THIS I'LL DEFEND.
The historical descent of elements of the 142d Engineer Battalion from the 164th Infantry is reflected by the inclusion of the sun from that unit's coat of arms. The sun, originally from the shoulder sleeve insignia of the 41st Division, indicates World War I service with that organization. Scarlet is associated with the Corps of Engineers, and with the yellow signifies that elements of the Battalion descended from the 957th Field Artillery Battalion. The World War II service of elements of the 142d Engineer Battalion in both the European and Pacific Theaters is represented by the field of erminois, frequently used in European coats of arms, and by the wavy lines representing water.
The crest is that of the North Dakota Army National Guard.
The coat of arms was originally approved for the 957th Field Artillery Battalion, North Dakota National Guard on 11 July 1957. It was rescinded on 28 February 1975. The insignia was reinstated and redesignated for the 142d Engineer Battalion, North Dakota Army National Guard with symbolism revised on 15 December 1987.