The Buffalo Soldiers were six regiments of all-black cavalry and infantry units established in 1866 by Congress. They served on the western frontier, protecting settlements and infrastructure from Native American tribes. As the first peacetime all-black regiments in the regular US Army, they played a vital role in the expansion of the American West while facing discrimination. Some notable Buffalo Soldiers included Fitz Lee, the first black Medal of Honor recipient, and Charles Young, the highest ranking black officer at the time. Their service helped advance the civil rights of African Americans.