The 102nd Cavalry Regiment is a regiment of the United States Army first established in 1913 and which saw service in World War II.
102nd Cavalry Regiment
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