African American soldiers West (U.S.) Social conditions 19th century Frontier Frontier and pioneer life West (U.S.) Geschichte Heer Racism West (U.S.) History 19th century Rasse Social status West (U.S.) History 19th century Soldiers West (U.S.) Social conditions 19th century Soziale Klasse USA United States Army Military life History 19th century West (U.S.) History 1860-1890 West (U.S.) History, Military 19th century West (U.S.) Race relations History 19th century West (U.S.) Social conditions 19th century