George Rogers Clark and the Illinois Campaign (1778-1779)

In 1778, Clark traveled down the Ohio River to the Falls of the Ohio with soldiers and many families who joined the military convoy for security and protection from American Indian attacks. For his camp, Clark chose an island at the Falls of the Ohio River. He named the place Corn Island. This event, which took place on May 27, 1778, marks the founding of the settlement later to be named Louisville.

Clark trained his troops at Corn Island and launched a successful campaign into the lands to the north, capturing British posts at Kaskaskia and Cahokia on the Mississippi River and Vincennes on the Wabash River. However, British Lieutenant Governor Hamilton marched from Detroit and recaptured Vincennes from the Americans. Settling in for the winter of 1778-79, Hamilton planned to reclaim the two Mississippi posts in the spring. Clark never gave him that opportunity.

In a daring concept, considered one of the boldest in American military history, Clark took fewer than 200 men on foot across 175 miles of flooded, frozen plains to recapture the British fort at Vincennes. This dangerous mission took almost three weeks, but British spies never sighted Clark’s men. When Clark ordered his men to begin firing on the fort, the British did not know how many Americans were surrounding them. Clark’s frontiersmen were deadly shots, convincing the British that they were outnumbered. Hamilton surrendered and Clark ensured American control of the Northwest Territory—a region that included the states of Ohio, Indiana, Illinois, Wisconsin and Michigan.

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