Fort Jefferson: The Chain That Held the Northwest

The small town of Fort Jefferson in Darke County, Ohio, takes its name from a military fortification built here in October of seventeen ninety-one, and the context of that construction is one of the bloodiest chapters in early American military history.

The new United States government, formed only a few years earlier, was determined to open the Northwest Territory for settlement. That territory, roughly the land north of the Ohio River, was still dominated by a confederation of Native nations, including the Miami, Shawnee, Delaware, and others who had been fighting to hold their homeland for generations. President Washington ordered a campaign to break their resistance.

In the autumn of seventeen ninety-one, General Arthur St. Clair, who was also the governor of the Northwest Territory, led an army north from Fort Washington, near present-day Cincinnati. In October, his troops built Fort Jefferson as a supply depot and moved on. A few weeks later, on November fourth, seventeen ninety-one, a force under Miami war leader Little Turtle ambushed St. Clair's army along the Wabash River. The result was the worst defeat the United States Army ever suffered at the hands of Native warriors. Over six hundred soldiers were killed and three hundred more were wounded, out of a force of roughly one thousand men. It remains the highest percentage battlefield loss in American military history.

Fort Jefferson suddenly became critically important. It was now the northernmost outpost of the United States Army, a lonely stockade in hostile country, and it held throughout the following years of renewed conflict. General Anthony Wayne, sent to succeed where St. Clair had failed, used the fort as a base of operations in seventeen ninety-three before pushing further north to build Fort Greenville.

Wayne's methodical campaign culminated in his victory at the Battle of Fallen Timbers in August of seventeen ninety-four, followed by the Treaty of Greenville in seventeen ninety-five, which opened most of Ohio to American settlement. Fort Jefferson's brief moment of strategic significance was over. The land around it became farmland, and the stockade vanished into the soil.