FORT LEAVENWORTH, Kan. (AP) -- Army and Fort Leavenworth leaders will mark the 20th anniversary of a monument honoring the legendary Buffalo Soldiers with the dedication of a new bronze bust.

The bust is the likeness of Brig. Gen. Benjamin Grierson who commanded the 10th Cavalry for nearly 22 years. Buffalo Soldiers were all-black units of the 9th and 10th Calvary that served in the U.S. Army in the years after the Civil War.

Grierson was a founder and longest serving commander of the 10th Cavalry.

The bust will be dedicated Aug. 8 near the site of the Buffalo Soldier Monument at Fort Leavenworth, which was dedicated in 1992. There are more than 100 Buffalo Soldiers buried at the National Cemetery at Fort Leavenworth, including Medal of Honor recipient Fitz Lee.