Bighorn River river passes through Yellowtail Dam and Afterbay Dam. The river turns to the northeast and enters the Great Plains. At Hardin the river is joined by the Little Bighorn River. Approximately downriver from the Little Bighorn, in Big Horn County, the Bighorn empties into the Yellowstone. The Bighorn River has also been known as the Great Horn River, Le Corne and Iisaxpúatahcheeaashisee in the Apsáalooke language which translates to English as "Large Bighorn Sheep River". Bighorn River The Bighorn River is a tributary of the Yellowstone, approximately long, in the states of Wyoming and Montana in the western United States.
Battle of the Little Bighorn from Fort Fetterman in the Wyoming Territory on May 29, marching toward the Powder River area. Brig. Gen. Alfred Terry's column, including twelve companies (A, B, C, D, E, F, G, H, I, K, L, and M) of the 7th Cavalry under Lt. Col. George Armstrong Custer's immediate command, Companies C and G of the 17th U.S. Infantry, and the Gatling gun detachment of the 20th Infantry departed westward from Fort Abraham Lincoln in the Dakota Territory on May 17. They were accompanied by teamsters and packers with 150 wagons and a large contingent of pack mules that reinforced Custer.