| 21st Regiment New York Volunteer Cavalry | |
|---|---|
| Active | September 4, 1863 to August 31, 1866 |
| Country | United States |
| Allegiance |  Union  New York |
| Branch | Union Army |
| Type | Cavalry |
| Size | Regiment |
| Engagements | |
| Commanders | |
| Colonel | William B. Tibbits |
| Colonel | Charles Fitz Simmons |
The 21st New York Cavalry Regiment was a cavalry regiment in the Union Army during the American Civil War. It was nicknamed the "Griswold Light Cavalry". The regiment began being formed during the late summer of 1863 in Troy, New York. [1] During its service, the regiment had 66 soldiers killed or mortally wounded. Disease caused the death of 77 soldiers. [2]