Churubusco, Battle of, August 20, 1847, a United States victory in the Mexican War. General Winfield Scott, advancing on Mexico City, met unexpected resistance six miles (10 km) south of the capital. Mexican troops under General Santa Anna were deployed around a bridge leading over the Churubusco River to heavily fortified San Pablo convent. A United States column tried to work around the Mexican right to the convent, but was driven off. Scott's main force under General William J. Worth broke through the Mexican center, stormed the bridge, and took the convent. About 2,500 Mexicans were killed or wounded at a cost of about 870 United States casualties.