George Rogers Clark National Historical Park, located in Vincennes, Indiana, is on the banks of the Wabash River at what is believed to be the site of Fort Sackville. On February 25, 1779, Lieutenant Colonel George Rogers Clark, older brother of William Clark, led the capture of Fort Sackville and British Lt. Governor Henry Hamilton as part of the celebrated Illinois Campaign, which lasted from 1778 to 1779. The heroic march of Clark’s men from Kaskaskia on the Mississippi River in mid-winter and the subsequent victory over the British remains one of the most memorable feats of the American Revolution. The result of this campaign resulted in a large portion of the midwest becoming property of the newly formed United States at the conclusion of the Revolutionary War.