ShieldOr on a bend Gules a fleur-de-lis of the field.
CrestOn a wreath of the colors a sword, point down, and key, wards down, in saltire Or encircled by the shoulder sleeve insignia of the 4th Division Proper, overall the winged helmet of Mercury of the first.
MottoSTRENGTH THRU SUPPORT.
ShieldThis organization took part in operations in Lorraine and in Ile-de-France. The shield is gold, the nearest heraldic equivalent to the Quartermaster buff, which is representative of the original service of the organization. The red bend is from the Arms of Lorraine, the gold fleur-de-lis from the Arms of Ile-de-France.
CrestThe crest has the shoulder insignia of the Division, the sword and key from the insignia of the Quartermaster Corps and Mercury's helmet from the insignia of the Motor Transport Corps during World War I.
The coat of arms was originally approved for the 4th Division Train, Quartermaster Corps on 28 June 1921. It was redesignated for the 4th Quartermaster Regiment on 30 December 1937. It was redesignated for the 4th Quartermaster Battalion on 8 May 1941. The insignia was rescinded on 6 February 1957. It was reinstated and redesignated for the 4th Supply and Transportation Battalion on 2 December 1963. It was amended to add the motto on 2 December 1963. The insignia was redesignated for the 4th Support Battalion with the symbolism revised on 2 June 1987.