His most famous actions against the U.S. military included the Fetterman Fight (21 December 1866) and the Battle of the Little Bighorn (25–26 June 1876). He surrendered to U.S. troops under General Crook in May 1877 and was fatally wounded by a military guard, allegedly[4][5] while resisting imprisonment at Camp Robinson in present-day Nebraska. He ranks among the most notable and iconic of Native American tribal members and was honored by the U.S. Postal Service in 1982 with a 13¢ postage stamp that is part of its Great Americans series.[6]