“Duncan now opened his batteries upon this building, and with such effect that the enemy soon retreated from it, leaving it unoccupied.
“At this time the remaining brigade of Pillow’s division, as well as that of Twiggs’, came on the ground, but they were too late. The enemy had already fallen back, and Molino del Rey and the Casa Mata were in possession of the American troops. The latter was shortly after blown up, and all the implements in the foundry, with the cannon moulds, having been destroyed, our army was ordered to return to Tacubaya.
“Thus ended one of the most bloody and fruitless engagements ever fought by the American army. Six hundred and fifty of our brave troops were either killed or wounded, while the loss of the enemy did not amount to more than half this number.
“The fatal action at Molino del Rey cast a gloom over the whole army. Nothing had been gained. The victorious troops fell back to their former positions, and the vanquished assumed a bolder front, celebrating the action as a victory. The Mexican commander gave out that the attack was intended for Chapultepec, and had consequently failed. This, among his soldiers, received credence and doubled their confidence; we, on the other hand, called it a victory on our side. Another such victory and the American army would never have left the Valley of Mexico.
“On the night of the 11th of September, at midnight, two small parties of men were seen to go out from the village of Tacubaya, moving silently along different roads. One party directed itself along an old road toward Molino del Rey, and about half-way between the village and this latter point halted. The other moved a short distance along the direct road to Chapultepec and halted in like manner. They did not halt to sleep; all night long these men were busy piling up earth, filling sand-bags, and laying the platforms of a gun battery.
“When day broke these batteries were finished, their guns in position, and, much to the astonishment of the Mexican troops, a merry fire was opened upon the Castle. This fire was soon answered, but with little effect. By ten o’clock another battery from Molino del Rey, with some well-directed shots from a howitzer at the same point, seemed to annoy the garrison exceedingly.
“A belt of wood lies between the Castle and Molino del Rey on the south. A stone wall surrounds these woods. Well-garrisoned, Chapultepec would be impregnable. The belief is that 1,000 Americans could hold it against all Mexico. They might starve them out, or choke them with thirst, but they could not drive them out of it. There are but few fortresses in the world so strong in natural advantages.
“During the whole of the 12th the shot from the American batteries kept playing upon the walls of the Castle, answered by the guns of the fortress, and an incessant fire of musketry was kept up by the skirmishing party in the woods of Molino del Rey. Towards evening the Castle began to assume a battered and beleaguered appearance. Shot and shell had made ruin on every point, and several of the enemy’s guns were dismounted.
“To enumerate the feats of artillerists on this day would fill a volume. A twenty-pound shot from a battery commanded by Captain Huger and Lieutenant Hagney entered the muzzle of one of the enemy’s howitzers and burst the piece. It was not a chance shot. This battery was placed on the old road between Tacubaya and Molino del Rey. The gate of the Castle fronts this way, and the Calzada, or winding road from the Castle to the foot of the hill, was exposed to the fire. As the ground lying to the north and east of Chapultepec was still in possession of the enemy, a constant intercourse was kept up with the Castle by this Calzada.
“On the morning of the 11th, however, when Huger’s and Hagney’s battery opened, the Calzada became a dangerous thoroughfare. The latter officer found that his shot thrown on the face of the road ricochetted upon the walls with terrible effect, and consequently most of his shots were aimed at this point. It was amusing to see the Mexican officers who wished to enter or go out of the Castle wait until Hagney’s guns were discharged, and then gallop over the Calzada as if the devil were after them.