Little Bighorn River Little Bighorn River The Little Bighorn River is a tributary of the Bighorn River in the United States in the states of Montana and Wyoming. The Battle of the Little Bighorn, also known as the Battle of the Greasy Grass, was fought on its banks on June 25, in 1876, as well as the Battle of Crow Agency in 1887. The Little Bighorn rises in northern Wyoming, deep in the Bighorn Mountains, under Duncum Mountain and Burnt Mountain. The main stream flows through a deep canyon until it issues onto the plains, just at the Montana-Wyoming border. In Little Bighorn
Battle of the Little Bighorn unusually large numbers of Native Americans, Crook held the field at the end of the battle but felt compelled by his losses to pull back, regroup, and wait for reinforcements. Unaware of Crook's battle, Gibbon and Terry proceeded, joining forces in early June near the mouth of Rosebud Creek. They reviewed Terry's plan calling for Custer's regiment to proceed south along the Rosebud while Terry and Gibbon's united forces would move in a westerly direction toward the Bighorn and Little Bighorn rivers. As this was the likely location of native encampments, all army elements had been instructed to converge there