21st Cavalry Division (United States)
The 21st Cavalry Division was a United States Army division with units located primarily in the northeastern United States. The division was created from the perceived need for additional cavalry units after the First World War. It numbered in succession of the Regular Army divisions, which were not all active at its creation.
Standard organization chart for a Cavalry Division in November 1940
This page is about the 101st Cavalry Regiment. The 101st Cavalry Group was its headquarters unit.
101st Cavalry Regt coat of arms
Troop A, Volunteer Cavalry from New York City, Camp Alger, Virginia 1898