Fort Fetterman was a wooden fort constructed in 1867 by the United States Army on the Great Plains frontier in the Dakota Territory approximately 11 miles northwest of present-day Douglas, Wyoming. It was located high on the bluffs on the south side of the North Platte River. It served as a major jumping-off point for the start of several major military expeditions against warring Native American tribes and soldiers there helped protect pioneers on the Bozeman Trail.