Why did the buffalo sodiers fight the Indians?

Buffalo Soldiers, African American troops in the U.S. Army, fought Native Americans primarily during the Indian Wars as part of the government's efforts to expand westward and secure land for settlers. These soldiers were often tasked with protecting railroad construction, escorting settlers, and enforcing Federal Laws, leading to conflicts with Indigenous tribes defending their territories. Their involvement was shaped by a complex mix of military duty, racial dynamics, and the broader context of American expansionism. Ultimately, the conflicts reflected the struggles over land and sovereignty in the face of westward expansion.