George Rogers Clark National Historical Park

One of the greatest feats of the American Revolutionary War is memorialized at Fort Sackville, which George Rogers Clark and his men captured in 1779.

A memorial stands on the site of Fort Sackville to commemorate the capture of the fort from British soldiers by Lt. Col. George Rogers Clark and his frontiersmen on February 25, 1779—one of the greatest feats of the American Revolutionary War. Clark's army, aided by French residents of the Illinois country, had marched through freezing floodwaters to gain this victory. The fort's capture assured United States claims to the frontier, an area nearly as large as the original 13 states.