Argent, a bend Sanguine between the gateway of the fort from the coat of arms of Verdun Azure and a prickly pear cactus Proper.
That for the regiments and separate battalions of the Maryland Army National Guard: On a wreath of the colors (Argent and Sanguine) a cross bottony per cross quarterly Gules and Argent.
PRO DEO, PATRIA, ET VICINO (For God, My Country, and My Neighbor).
The shield and ordinary are in the Medical Department colors. The bend taken from the coat of arms of Alsace, and the gateway of the fort, from the coat of arms of the City of Verdun, represent service during World War I, and the cactus symbolizes service on the Mexican border.
The crest is that of the Maryland Army National Guard.
The coat of arms was originally approved for the 104th Medical Regiment, National Guard of Maryland, Virginia and the District of Columbia on 6 March 1928. It was amended to correct the blazon of the crest for the District of Columbia on 16 June 1928. It was redesignated for the 104th Medical Battalion on 23 September 1942. The coat of arms was amended to delete the Virginia and District of Columbia National Guard crests on 18 September 1961.