Fort Abraham Lincoln log scouts' quarters. Water was supplied to the fort by being hauled from Missouri River in wagons, while wood was supplied by contract. By 1873, the 7th Cavalry moved into the fort to ensure the expansion of the Northern Pacific Railway. The first post commander of the expanded fort was Lieutenant Colonel George A. Custer, who held the position until his death in 1876. In 1876, the Army departed from here as part of the Great Sioux War of 1876-77, resulting in Custer's defeat at the Battle of the Little Bighorn, where they were to push the non-treaty Indians back
Great Sioux War of 1876 be given to the resisting northern bands. In October 1876, Army troops surrounded the villages of Red Cloud and Red Leaf. They arrested and briefly confined the leaders, holding them responsible for failing to turn in individuals arriving in camp from hostile bands. The US sent another commission to the agencies. According to historian Colin Calloway, "Congress passed a law extinguishing all Lakota rights outside the Great Sioux Reservation." Colonel Ranald S. Mackenzie and his Fourth Cavalry were transferred to the Department of the Platte following the defeat at the Little Bighorn. Stationed initially at Camp Robinson, they formed the