the meantime, Taylor launched a diversion against eastern Monterrey with Col. John Garland's 1st and 3d Infantry plus Lt. Col. William H. Watson's Maryland and District of Columbia Battalion, which quickly grew into an assault. By 8am, Capt. Electus Backus's company of the 1st Infantry had taken the tannery and by noon, with Col. William B. Campbell's 1st Tennessee and Mississippi Rifles, had taken Fort de La Teneria. No attacks or sorties occurred on 22 September. At 3am on 23 September, Worth sent the Texas Rangers and the 4th and 8th Infantry, under Lt. Col. Thomas Childs, to take Fort Libertad on Independencia, which they did by daybreak. With the help of James Duncan's battery, they soon took the Obispado and had control of western Monterrey. By then, the Mexicans had abandoned their outer defenses on the east side of Monterrey, concentrating in the Plaza Mayor, and John A. Quitman's brigade held eastern Monterrey by 11am. During the exchange of fire, a young Mexican woman wandered into the crossfire to tend to the wounds of injured soldiers of both armies. She was struck by a bullet while attending to a wounded U.S. soldier, and was likely killed. Her name was later discovered to be María Josefa Zozaya. By 2pm on 23 September, General Worth advanced into the city from the west, burrowing house to house, supported in the late afternoon by a mortar set up in Plaza de la Capella, and were within a block west of the plaza by 11pm. The Texan volunteers taught the U.S. regulars new techniques for fighting in the city, techniques that they did not employ on 21 September, which led to staggering casualties. Armed with these new urban warfare skills, the U.S. Army, along with Texan, Mississippian, and Tennessee volunteers moved house to house, rooting out Mexican soldiers hiding on rooftops and inside the thick, adobe-walled houses of northern Mexico. By 2pm, Taylor and Quitman were within two blocks east of the plaza when Taylor ordered a withdrawal before nightfall. General Ampudia decided to negotiate on 24 September. Taylor negotiated a two-month armistice, along the line Rinconada Pass-Linares_San Fernando de Parras, in return for the surrender of the city. The Mexican Army was allowed to march from the city from 26 to 28 September, with their personal arms and one field battery of six guns. Aftermath Ampudia had moved beyond the armistice line by