Which conflict involved buffalo soldiers and started when the apache refused to move to reservations?

Geronimo Campaign

In this campaign, the Apache chief, Geronimo, surrendered to the US army on 25th of October 1886, ending a long and bloody struggle. It brought an end to a struggle that had figured prominently in the western campaign of the Civil War

The Geronimo Campaign involved the buffalo soldiers and it started when the Apache refused to move to reservations.

This campaign was led by Geronimo. He was a prominent leader and medicine man from the Bedonkohe band of the Apache tribe. The soldiers were called buffalo soldiers because they were all African American soldiers.