The 31st Spirit of Vincennes Rendezvous was held May 26 & 27, 2007 in Vincennes Indiana. Around 26,000 visitors attended the 2 day event. 400 re-enactors from the Northwest Territory Alliance camped out, demonstrated 18th century arts and crafts, and held mock battles. The Rendezvous takes place at the George Rogers Clark National Historic Park where the British surrendered Fort Sackville.

During July 1778, Lt. Col. George Rogers Clark and his force of 180 frontiersmen captured British-controlled but French inhabited Kaskaskia and Cahokia across from St. Louis. Learning of Clark's occupation of Kaskaskia, British Lieut. Gov. Henry Hamilton gathered his forces and traveled from Detroit, reaching Vincennes on December 17. Hamilton postponed an attack on Kaskaskia until spring in order to strengthen the fortifications at Ft. Sackville. Clark realized that his small force could not hold the Illinois posts if Hamilton was given sufficient time to gather his forces, and he boldly decided to move on Ft. Sackville at Vincennes immediately.

On February 6, 1779, Clark outfitted and supplied the armed galley "Willing," which was to rendezvous with the rest of the force on the Wabash down river from Vincennes. Clark led 172 men, nearly half of which were French volunteers, from Kaskaskia to Vincennes. On February 23, they surprised Vincennes. Clark ordered that all of the company's flags be marched back and forth behind a slight rise to convince the British that there were 600 men rather than under 200. On the morning of the third day, February 25, Hamilton surrendered.