Chivington gained infamy for leading a 700-man force of Colorado Territory militia during the massacre at Sand Creek in November 1864. An estimated 70–163 peaceful Cheyenne and Arapaho – about two-thirds of whom were women, children, and infants – were killed and mutilated by his troops. Chivington and his men took scalps and other body parts as battle trophies, including human fetuses and male and female genitalia. The Joint Committee on the Conduct of the War conducted an investigation of the massacre, but while they condemned Chivington's and his soldiers' conduct in the strongest possible terms, no criminal charges were brought against him or them. The closest thing to a punishment Chivington suffered was the effective end of his political aspirations.