The Americans made little progress in this battle, but the Mexican forces were unable to hold them back long enough to prevent the capture of Mexico City one week later.

[1]: 308 On 6 September 1847, Scott ended the armistice following the Battle of Churubusco as negotiations broke down, as it became clear that Antonio López de Santa Anna was preparing to resume fighting.

[1]: 307  On 7 September, a large number of Mexican horsemen were observed around a group of low, massive stone buildings known as El Molino del Rey or King's Mill.

General Winfield Scott received reports that the trees masked a foundry for casting cannon, and rumors told that Antonio López de Santa Anna, leader of both the Mexican government and military, in desperate need of ordnance, was sending out church and convent bells to have them melted down and converted to cannon.

At 5:45 am, on 8 September, Worth sent an assault column of 500 men, assembled from the various units of his division and led by Major George Wright of the 8th Infantry, down a gently sloping plain against the western end of the buildings.

[1]: 310  Brigadier General Matías Peña y Barragán led two counterattacks, but the Americans were able to force two gates and then fight room-to-room to take the mill after 2 hours, but found only a few gun molds.

[1]: 310  The Casa Mata caught fire and blew up near noon, causing more casualties, but by 1:00 pm, the Americans were back where they started.