Private Cathay Williams was the only woman to serve in the US Army as a Buffalo Soldier. On November 15, 1866 she enlisted in the Army as a man. Williams reversed her name William Cathay and lived as a male soldier and served until she was found out due to the last of many illnesses she suffered while in service. She is the only documented black woman known to have served in the Army during these times when enlisting women was prohibited
Henry Harley "Hap" Arnold (June 25, 1886 – January 15, 1950) was one of Arthur Welsh's students. He held the grades of General of the Army and later General of the Air Force. Arnold was an aviation pioneer, Chief of the Air Corps (1938–1941), Commanding General of the U.S. Army Air Forces during World War II, the only Air Force general to hold five-star rank, and the only person to hold a five-star rank in two different U.S. military services.