- U.S. 9th Cavalry Regiment
- U.S. 10th Cavalry Regiment
- 24th Infantry Regiment
- 25th Infantry Regiment
Although several African American regiments were raised during the Civil War to fight alongside the Union Army (including the famous 54th Massachusetts Volunteer Infantry and the many United States Colored Troops Regiments), the "Buffalo Soldiers" were established by Congress as the first peacetime all-black regiments in the regular U.S. Army.
On September 6, 2005, Mark Matthews, who was the oldest living Buffalo Soldier, died at the age of 111. He was buried at Arlington National Cemetery.