Once inside the enemy breastworks, the men of the 2nd Iowa opened fire on the Confederate soldiers, most of whom fell back to the next trench. Those who refused to retreat were put down by the men's bayonet. The men of the 2nd Iowa continued their attack on the Confederate forces and followed them into the next line of trenches before the Confederates could regroup and counterattack. At this point in the battle, the rest of the brigade, which formed the right wing of attack, began occupying the first trench and firing upon the second entrenchment. Friendly fire from the 52nd Indiana Infantry caused more casualties for the 2nd Iowa. In the confusion, the 2nd Iowa fell back into the first entrenchment and regrouped with their comrades behind them. General Smith then ordered the regiment to take cover behind the walls of the first trench while the 25th Indiana unsuccessfully tried to take the second trench by bayonet. After the failed charge, the Federal forces regrouped. The men endured another cold night without any protection from the elements, and prepared for battle in the morning.