Following the end of the French and Indian War in 1763, the French abandoned the fort and a band of Chickasaws burned it to the ground. When Captain Thomas Stirling, commander of the 42nd Highland Regiment, arrived to take possession for Britain, all he found was a charred ruin. The British never rebuilt the fort. In 1778, during the Revolutionary War, Col. George Rogers Clark led his regiment of “Long Knives” into Illinois near the fort at Massac Creek. Clark marched overland to Fort Kaskaskia, 100 miles to the north, without firing a shot. From there, Clark marched across Illinois to Fort Sackville (Vincennes), capturing the entire Illinois Territory, and then some, for the State of Virginia. In 1794, during the Northwest Indian War, President George Washington ordered the fort rebuilt, and for the next 20 years it protected U.S. military and commercial interests in the Ohio Valley. During this time, Fort Massac was the largest outpost of the U.S. Military.