Fort Maginnis

Fort Maginnis was established during the Indian wars in the Department of Dakota by the U.S. Army. It was the last of five forts: Keogh (1876), Custer (1877), Missoula (1877), Assinniboine (1879), and Maginnis (1880) - built following the defeat of Lieutenant Colonel George A. Custer by Native Americans at the Battle of Little Bighorn in June, 1876.

History
Fort Maginnis was established in 1880 about 8 mi northeast of Giltedge, Montana Territory (now a ghost town) by companies of the 3rd Infantry Regiment (United States) under the command of Captain Daingerfield Parker. The fort was named for Martin Maginnis, Major of the 11th Minnesota Infantry during the Civil War, and the then U.S. Representative from Montana Territory's At-large district. Elements of the 1st United States Cavalry Regiment garrisoned the post beginning in 1881. Maginnis was abandoned on July 20, 1890 and the buildings were sold to the public.

In 1879, Granville Stuart and his friend Samuel T. Hauser along with Helena banker Andrew J. Davis established the Davis, Hauser and Stuart (DHS) cattle company. Stuart was the general manager and established the ranch headquarters of the DHS on Flat Willow Creek near Fort Maginnis. Although surrounded by open range, the ranch was located close to the fort which provided both protection from a limited Indian threat but a ready market for cattle. However this proximity to Fort Maginnis proved to be a major problem as the army claimed rights to all the hay land surrounding the fort, including that of the DHS ranch. The dispute went on for several years before the army finally returned control of the hay land to the DHS in May 1882.

In 1885, Lieutenant Colonel James W. Forsyth of the 1st Cavalry served as the fort's commander. In 1890, at the end of the Indian Wars, Fort Maginnis was abandoned.

Modern day
The site of the fort is located about 25.1 mi northeast of present-day Lewistown, Montana. Some foundations and ruins remain.