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
Battle of the Little Bighorn the three Crow scouts, but also accompanied by General Charles Woodruff "as I particularly desired that the testimony of these men might be considered by an experienced army officer". Finally, Curtis visited the country of the Arikara and interviewed the scouts of that tribe who had been with Custer's command. Based on all the information he gathered, Curtis concluded that Custer had indeed ridden down the Medicine Tail Coulee and then towards the river where he probably planned to ford it. However, "the Indians had now discovered him and were gathered closely on the opposite side". They were soon joined