 News of the defeat at Contreras caused a panic among the rest of Santa Anna's army, and Scott immediately pressed the attack, beginning the Battle of Churubusco.Despite the strong defense put up by the Saint Patrick's Battalion and some other units, Scott's force quickly defeated the demoralized Mexican army.After the battle, Santa Anna negotiated a truce with Scott, and the Mexican foreign minister notified Trist that they were ready to begin negotiations to end the war.