a second column of two supply wagons and fifteen soldiers under lieutenant richardson set out from vincennes two days after the first wagon, following the same trail, and unaware of the fate of the first. when the potawatomi learned that a second supply train was approaching, they set up the same ambush. on september 15, after the initial attack, richardson realized he was out-manned, and ordered a retreat. the wagons were left behind to be plundered, which may have saved the lives of the retreating soldiers. even so, seven men had been killed, and another had been badly wounded.