Battle of Contreras
20 August 1847
The Battle of Contreras, also known as the Battle of Padierna, took place on 19–20 August 1847, in one of the final encounters of the Mexican–American War, as invading U.S. forces under Winfield Scott approached the Mexican capital. American forces surprised and then routed the Mexican forces of General Gabriel Valencia, who had disobeyed General Antonio López de Santa Anna's orders for his forces' placement.