The terms of the truce had been violated before, when teams had been sent into the city to bring out supplies for the army.

The first train entering the city was very severely threatened by a mob.

This, however, was apologized for by the authorities and all responsibility for it denied; and thereafter, to avoid exciting the Mexican people and soldiery, our teams with their escorts were sent in at night, when the troops were in barracks and the citizens in bed.

The circumstance was overlooked and negotiations continued.

As soon as the news reached General Scott of the second violation of the armistice, about the 4th of September, he wrote a vigorous note to President Santa Anna, calling his attention to it, and, receiving an unsatisfactory reply, declared the armistice at an end.
General Scott, with Worth's division, was now occupying Tacubaya, a village some four miles south-west of the City of Mexico, and extending from the base up the mountain-side for the distance of half a mile.
More than a mile west, and also a little above the plain, stands Molino del Rey.