TIn late 1778, leading a small force of one hundred and fifty men, George Rogers Clark entered the Illinois Country where they would capture Great Britain's major posts along the Mississippi and take British lieutenant governor Henry Hamilton prisoner to achieve one of the most singular victories during the American Revolution. Having suffered at the hands of British-supported Native American raids in Kentucky, Clark and his men embraced a confrontational approach, lumping all Native American nations together as inveterate blood enemies. For years, Clark's daring achievement was lionized as the embodiment of American initiative. Now, in light of Clark's treatment and participation in the subjugation of Native peoples, his legacy has reversed, with his statue at the University of Virginia recently being removed. His lack of nuance led him to misinterpret Indian responses to his military campaign and conclude that his approach produced results. In fact, many Native American nations simply used the American presence on the Mississippi to extort greater support from the British. In Till the Extinction of This Rebellion: George Rogers Clark, Frontier Warfare, and the Illinois Campaign of 1778-1779 Eric Sterner views the campaign from the American, British, and Indigenous perspectives and illustrates the wide geographic impact of the American Revolution west of the Appalachians, particularly on the French and Native American communities in the area. Clark s expedition was sanctioned by Virginia in order to protect its western border, and the author provides an overview of this rationale along with the strategies, tactics, and logistics Clark employed, particularly his ability to operate over great distances in remote areas. In particular, the author pays close attention to the psychological battlefield and how Clark combined mobility, surprise, and a calculated reputation for violence a tactic respected by the Native peoples to achieve dominance over his adversaries, often enabling the Americans to achieve their goals without harming anyone. The book culminates with the capture of Fort Sackville/Vincennes, in which Clark and his men fought the only pitched battle of the Illinois Campaign. The resounding success of Clark s expedition laid the foundation for credible American postwar claims to lands as far west as the Mississippi, opening even more territory to new settlements at the expense of the Native peoples. Till the Extinction of This Rebellion is an important contribution to understanding the impact of the American Revolution on both Native peoples and westward expansion.