Fort Knox II near Vincennes, Indiana
Following the relief army to Fort Harrison was a party of thirteen soldiers under Lieutenant Fairbanks of the Seventh Infantry escorting a supply wagon loaded with flour and meat. On 13 September 1812, the supply wagon was ambushed by a Potawatomi war party...near modern Fairbanks, Indiana. Only two men...managed to escape back to Fort Knox alive... . [Wikipedia]
Letter from Zachary Taylor, dated September 13, 1812, from Fort Harrison regarding a possible attack at the Narrows (which is exactly what happened):
See Duff Green post. Green served at Vincennes and Fort Harrison under General William Henry Harrison.