Final answer:
The Buffalo Soldiers were African American regiments in the U.S. military who served after the Civil War. Despite facing discriminatory treatment and segregation, they served with distinction in various conflicts.
Step-by-step explanation:
The Buffalo Soldiers were African American regiments in the U.S. military that served after the Civil War. They were originally assigned to frontier duty, where they fought on horseback and performed various tasks such as guarding mail shipments and building roads. The Buffalo Soldiers earned their nickname from the Comanche tribe for their toughness in combat. In the military, African Americans faced discriminatory treatment and segregation from their white counterparts. Despite these challenges, African American soldiers served with distinction in several conflicts, including the Spanish-American War, the Indian Wars, the Philippine-American War, and both World Wars.