Fort Berthold is a former United States Army frontier fort that was located in present‑day North Dakota, United States. Established in 1867, the post was situated on the west bank of the Missouri River near the confluence with the Knife River, in the area that is now part of the Fort Berthold Indian Reservation.
Historical background
The fort was originally named Fort Stevenson, after an earlier military installation that had been abandoned in 1865. In 1868, the post was renamed Fort Berthold in honor of General Jacob A. Berthold, a Union Army officer who served during the American Civil War. Its primary purpose was to protect travelers and settlers along the Missouri River corridor, to support the construction of telegraph lines, and to serve as a base for military operations against Native American tribes during the Plains Indian Wars.
Operations and decline
Fort Berthold functioned as a supply depot and staging point for troops engaged in campaigns against the Sioux and other Plains peoples. The fort's garrison typically consisted of cavalry units of the 7th Infantry Regiment and later the 2nd Cavalry Regiment. With the cessation of major military conflicts in the region and the shift of transportation routes away from the Missouri River, the fort’s strategic importance diminished. The post was officially decommissioned in 1884, and the buildings were subsequently abandoned or repurposed by local settlers.
Modern context
The land formerly occupied by Fort Berthold is now within the boundaries of the Fort Berthold Indian Reservation, which is jointly administered by the Mandan, Hidatsa, and Arikara Nation (often abbreviated as the Three Affiliated Tribes). The reservation encompasses portions of McLean and Mountrail counties and includes several towns, including Garrison and New Town. The name "Fort Berthold" persists in various local institutions and geographic references, such as Fort Berthold Lake, an impoundment created by the Garrison Dam on the Missouri River.
Geography
The original fort site lies near the coordinates 47°35′N 101°30′W. The surrounding region is characterized by the Missouri River floodplain, rolling prairie, and a semi‑arid climate. The area is notable for its agricultural use, particularly the cultivation of wheat, barley, and other cereal crops, as well as cattle ranching.
Cultural significance
While the fort itself no longer exists, its historical presence is acknowledged in the collective memory of the Three Affiliated Tribes and in regional historical societies. Archaeological investigations have identified remnants of the fort’s foundations, offering insights into mid‑19th‑century military architecture and frontier life.
References
- United States Army historical records, Fort Berthold (1867–1884).
- Three Affiliated Tribes, "History of the Fort Berthold Reservation."
- National Park Service, "Frontier Forts of the Upper Missouri River."