The 10th Cavalry Buffalo Soldiers, made up of African-American soldiers, were part of the Fort Assiniboine garrison during the Indian Wars. They were called into service on the front during the Spanish–American War. They supported the flank of Roosevelt's "Rough Riders" at the Battle of San Juan Hill in 1898 in Cuba. Eyewitnesses noted that the Rough Riders would not have prevailed without the Buffalo Soldiers.