McLean was at corps headquarters with Devens when the attack happened (Howard had left the area, inexplicably escorting reinforcements to another part of the battlefield). As Confederates were approaching the Ohio Brigade's position, McLean implored Devens for orders to turn their front. Devens refused, possibly because he had been using brandy to dull the pain of a leg injury that occurred the previous day, when his horse ran him into a tree. As a result, the Ohio Brigade managed an impromptu defense, and even attempted a counterattack, before being driven back towards Chancellorsville. Devens was shot in the foot during the retreat, giving McLean command of the division again. They reformed on Mineral Springs Road, northeast of Chancellorsville and away from any fighting, with the rest of the XI Corps.