ShieldOr a pile bendwise Gules and overall a horse courrant Argent, on a chief Azure a mullet of the third.
CrestThat for the regiments and separate battalions of the Nevada Army National Guard: From a wreath Or and Gules, within a garland of sagebrush a sledge and miner’s drill crossed in saltire behind a pickax in pale Proper.
ShieldRed and gold connote the Spanish heritage of Nevada and the branches of the Armor-Cavalry and Artillery in which the 221st and its antecedents have served. The red pile symbolizes the blast trail of an Artillery rocket. The 221st served as one of the very few Rocket Artillery organizations in the US Army, during World War II. The mustang, noted for hardiness, descended from the Spanish Conquistadors’ Warhorses, is native to the State of Nevada and symbolizes a combat maneuver unit. The star is from the Nevada State Flag and the colors blue and silver (white) are the state colors.
CrestThe crest is that of the Nevada Army National Guard.
The coat of arms was originally approved for the 221st Armor Regiment on 18 September 1981. It was redesignated for the 221st Cavalry Regiment on 10 December 1997.