Battle of the Rosebud on the reservation by January 31, 1876 to negotiate the sale. A few bands did not comply and when the deadline of January 31 passed the US undertook to force Sitting Bull, Crazy Horse, and their followers onto the reservation. The first military expedition against the recalcitrant Indians in March 1876 was a failure, ending in the Battle of Powder River. In June 1876, the US military renewed the fight with a three-pronged invasion of the Bighorn and Powder river country. Colonel John Gibbon led a force from the west; General Alfred Terry (with Lieutenant Colonel George Armstrong Custer) came
Great Sioux War of 1876 Ash Creek. Miles' continuous campaigning pushed a number of the Northern Cheyenne and Lakota to either surrender or slip across the border into Canada. Miles later commanded the US Army during the Spanish–American War. The Agreement of 1877 (, enacted February 28, 1877) officially took away Sioux land and permanently established Indian reservations. While military leaders began planning a spring campaign against the Lakota and Northern Cheyenne who had refused to come in, a number of diplomatic efforts were underway in an effort to end the war. After the defeat at the Battle of the Little Bighorn in June 1876,