For commander of this expedition choice was made of a Revolutionary soldier named James O'Fallon, who went to Kentucky, where he married Clark's sister.

He entered into relations with Wilkinson, who drew him into the tangled web of Spanish intrigue.

He raised soldiers, and drew up a formal contract, entered into between the South Carolina Yazoo Company and their troops of the Yazoo Battalion--over five hundred men in all, cavalry, artillery and infantry.

Each private was to receive two hundred and fifty acres of "stipendiary" lands and the officers in proportion, up to the Lieutenant Colonel, who was to receive six thousand.

Commissions were formally issued, and the positions of all the regular officers were filled, so that the invasion was on the point of taking place.