The end of the major Indian wars came at the Wounded Knee massacre on December 29, 1890, where the 7th Cavalry attempted to disarm a Sioux man and precipitated an engagement in which about 150 Sioux men, women, and children were killed. Only thirteen days before, Sitting Bull had been killed with his son Crow Foot in a gun battle with a group of Indian police that had been sent by the American government to arrest him. Additional conflicts and incidents though, such as the Bluff War (1914–1915) and Posey War, would occur into the early 1920s. The last combat engagement between U.S. Army soldiers and Native Americans though occurred in the Battle of Bear Valley on January 9, 1918.