The Ninth Cavalry was a regiment of the United States Army, established in 1866. It was one of the first African American units formed after the Civil War, known as the "Buffalo Soldiers." These soldiers played a crucial role in the westward expansion of the United States, participating in various military campaigns against Native American tribes and in the Spanish-American War. The regiment was recognized for its bravery and discipline, earning numerous commendations throughout its service. The Ninth Cavalry contributed to the development of the American frontier and helped establish law and order in newly acquired territories, leaving a lasting legacy in military history.