The Battle of Monterey, Mexico, was a six days' battle and siege during the Mexican War, that took place between September the 20th and 25th, 1846. General Taylor commanded the American army of 6600 soldiers and General Ampudia held the town with 10,000 Mexicans. Taylor began operations by cutting off communications and attempting to storm the western heights, later disposing his troops so as to attack all points at once. During two days his efforts were unsuccessful. Finally CaptainBackus, of the First Infantry, by firing into Fort Teneria from a captured tannery, won that stronghold. La Federacion heights, Forts Obispado and Diablo and the Saltillo road were captured in succession. In unsuccessful attacks on FortDiablo, 394 officers and men were lost. By September the 23rd Taylor practically held the town. On September the 25th Ampudia was allowed to evacuate, carrying one field battery and his small arms. This ended the campaign on the Rio Grande. Research Battle of Monterey