Plains Indian Wars By AlyxP Aug 19, 1854 Grattan Massacre [https://www.wyohistory.org/encyclopedia/grattan-fight-prelude-generation-war] Nov 29, 1864 Sand Creek Massacre https://youtu.be/Rtb9O5Ai9Cw?si=jCGdGFfZ4wqfeurU Period: 1866 to 1867 Red Cloud's War https://www.wyohistory.org/encyclopedia/red-clouds-war
