June 25 – On this day in Montana history in 1876 when the gun smoke cleared on the hills above the Little Big Horn River, Gen. George Armstrong Custer and about 260 of his men including his Indian Scouts lay dead. The Sioux called it the battle of Greasy Grass and it was the last major victory for Sitting Bull and the estimated 2,000 Sioux, Arapaho and Cheyenne warriors who had once called the area home.