ShieldBuff, a saltire Gules, a mullet of eight, the top forming a demi-fleur-de-lis Or bearing nine billets Sable.
CrestThat for the regiments and separate battalions of the Army Reserve: From a wreath Or and Gules, the Lexington Minute Man Proper. The statue of the Minute Man, Captain John Parker (H.H. Kitson, sculptor), stands on the Common in Lexington, Massachusetts.
MottoSUPPLY IS OUR SERVICE.
ShieldBuff and scarlet are the colors traditionally associated with support. Gold is emblematic of honor and achievement. The heraldic billets signify requisitions and indicate the unit's effective supervision of stock control and processing supplies. The compass star additionally denotes the command and control aspects of the service performed by the Battalion. The saltire and fleur-de-lis refer to the organization's original location in Jackson, Mississippi, the "Crossroads of the South," which began as "LeFleur's Bluff."
CrestThe crest is that of the United States Army Reserve.
The coat of arms was approved for the 365th Support Battalion on 3 May 1994.