In August 1864, Evans met with Black Kettle and several other chiefs to forge a new peace, and all parties left satisfied. Black Kettle moved his band to Fort Lyon, Colorado, where the commanding officer encouraged him to hunt near Sand Creek. In what can only be considered an act of treachery, Chivington moved his troops to the plains, and on November 29, they attacked the unsuspecting Native Americans, scattering men, women, and children and hunting them down. The casualties reflect the one-sided nature of the fight. Nine of Chivington’s men were killed; 148 of Black Kettle’s followers were slaughtered, more than half of them women and children. The Colorado volunteers returned and killed the wounded, mutilated the bodies, and set fire to the village.
The atrocities committed by the soldiers were initially praised, but then condemned as the circumstances of the massacre emerged. Chivington resigned from the military and aborted his budding political career. Black Kettle survived and continued his peace efforts. In 1865, his followers accepted a new reservation in Indian Territory.