Shield
Per fess Gules and Argent, in chief on an equilateral triangle of the last a stylized bird Sable.
Crest
That for the regiments and separate battalions of the Mississippi Army National Guard: On a wreath of the colors (Argent and Gules) a slip of magnolia full flower with leaves Proper behind a trident Sable.
Motto
DUTY IS OURS.
Shield
Red and white are the colors for the Corps of Engineers. The triangle is in the form of the Greek letter "delta" and symbolizes the unit's place of origin, Gulfport, Mississippi. The stylized bird represents the organization's function as Aviation Engineers.
Crest
The crest is that of the Mississippi Army National Guard.
The coat of arms was originally approved for the 890th Engineer Aviation Battalion on 3 October 1955. It was redesignated for the 890th Engineer Battalion on 5 April 1957.