Azure, a pale bretessed and double-parted Argent surmounted by a gauntlet closed, palm inward Argent (Silver Gray), edged of the first, charged on the sleeve with two mullets in pale Gules; on a chief of the last, ajourné Argent, a bowie knife fesswise, point to dexter Argent (Silver Gray).
That for the regiments and separate battalions of the Mississippi Army National Guard: From a wreath Argent and Azure, a slip of magnolia full flower with leaves Proper behind a trident Sable.
HONOR IS OUR STRENGTH.
Red, white and blue are the nation's colors and the colors of the Mississippi flag. The pale parted suggests railroad tracks, denoting the City of Meridian, which was founded at the junction of several railroad lines and the home state of the Brigade. The gauntlet represents strength and symbolizes the call sign used by the Headquarters, "Knight." The stars signify the Battalion's combat deployment during World War II and Operation Iraqi Freedom. The chief with the separations illustrates the battlements of a castle and suggests the former Special Troops Battalion's lineage to the 150th Engineer Battalion. The four merlons commemorate the four soldiers of the 150th Engineer who lost their lives during Operation Iraqi Freedom: MSG Sean Cooley, SGT Robert McNail, SSG Larry Arnold and SGT Terrence Lee. The bowie knife indicates the former Battalion's association to the 155th Armored Brigade Combat Team.
The crest is that of the Mississippi Army National Guard.
The coat of arms was originally approved for the Special Troops Battalion, 155th Armored Brigade Combat Team on 18 April 2008. It was redesignated effective 5 October 2016, for the 150th Engineer Battalion with the symbolism updated.