ShieldOr, a saltire couped Sable, overall three horses’ heads conjoined in pairle Argent.
CrestThat for the regiments and separate battalions of the Army Reserve: On a wreath of the colors Or and Sable, the Lexington Minute Man, Captain John Parker (H.H. Kitson, sculptor), stands on the Common in Lexington, Massachusetts.
ShieldThe shield is yellow for Cavalry. The three horses’ heads and the couped saltire represent the number of the Regiment- 3-10.
CrestThe crest is that of the United States Army Reserve.
The coat of arms was approved on 23 September 1932. It was rescinded on 2 February 1959.