On June 17, 1867, a battalion of the 10th U.S. Infantry began building a fort to protect westward travelers. The Homestead Act, combined with the end of the Civil War, had led to increased westward migration. Soldiers used oak logs to construct buildings, all arranged within a fortification made of sod. An area of ten square miles with the fort at its center was designated as the Fort Ransom Military Reservation. The fort was named after Major General Thomas E.G. Ransom of the U.S. Volunteers.