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
5th Cavalry Regiment the Great Plains, and against the Utes in Colorado. On 8 July 1869 at the Republican River in Kansas, Cpl John Kyle made a valiant stand against attacking Indians resulting in him receiving the Medal of Honor. The 5th was then sent to Arizona, where it defeated the Apaches in 95 engagements from 1871 to 1874. Due to these actions, General William Sherman told a committee from the United States House of Representatives that "the services of the 5th Cavalry Regiment in Arizona were unequaled by that of any Cavalry Regiment." After General Custer and 264 of his men died