The Virginians now determined to conquer the British posts in the country northwest of the Ohio.

The command was given to George Rogers Clark.
Gathering a strong band of hardy frontiersmen he set out on his dangerous expedition.

He seized the posts in Illinois, and Vincennes surrendered to him.

Then the British governor of the Northwest came from Detroit with a large force and recaptured Vincennes.

Clark set out from Illinois to surprise the British.