Many of the old Confederate flintlock weapons would not fire in the wet conditions and Zollicoffer's death caused his demoralized men to start a retreat. Thomas sent six regiments against the weak Confederate flank, causing the Confederate line to collapse and retreat to Beech Grove. Crittenden moved the remaining force across the Cumberland River overnight on a small steamboat and a few barges. He left his artillery, mules, equipment and most of his food supply on the north bank. The Union had gained a significant victory and boost in morale, while the Confederates had lost a brave, if unskilled, general, along with about 500 men and the small army's equipment and supplies.