assault or siege had been gathered carefully, and transported slowly into the interior, through the country intervening between Vera Cruz and Puebla, every train being usually attacked by guerillas, and fighting its way boldly through the most dangerous passes.
The equipments of the Mexicans, except the weapons saved from the wreck of former battles, had been chiefly prepared at the cannon foundries and powder factories of the country, and it is quite amazing to notice how completely a great exigency brought forth the latent energies of the people, teaching them what they might ordinarily effect, if guided by a spirit of industry and progress. Under the most disheartening depression, but fired by the stimulus of despair, by an overpowering sense of patriotic duty, and by religious enthusiasm which had been excited by the crusading address of the clergy of San Luis Potosi, issued in the month of April, they manifested in their last moments, a degree of zeal, calmness, and foresight that will forever redound to their credit on the page of history.
The Mexican preparations for defence were not, of course, as completely known to the Americans as we now describe them. Through spies, scouts and reconnoisances of our engineers, some of the exterior, and even of the interior lines were ascertained with tolerable accuracy; but sufficient was known to satisfy General Scott that of all the approaching routes to the capital, that which led along the southern shores of lake Chalco was the only one he ought to adopt.[1]
Accordingly, on the 15th of August, the movement was commenced in the reverse order from that in which the army had entered the valley from Puebla. Worth's division passing Pillow's, led the advance, Pillow and Quitman followed, while Twiggs' brought up the rear. Scott took his position with Pillow, so as to communicate easily with all parts of the army. Water transportation, to some extent, had been obtained by General Worth at Chalco, by the siezure of market boats which plied between that place and the capital. When Twiggs moved he was assailed by Alvarez and his Pintos, but soon drove them off, while the advance columns, after passing San Gregorio, were frequently assailed by the enemy's light troops in their front, and harassed and impeded by ditches that had been hastily cut across the road, or by rocks rolled down from the
- ↑ General Scott had set his heart, even at Puebla, on the Chalco route, but he resolved not to be obstinate, if, on a closer examination of the ground, a better route was presented. The last information of his spies and officers, in the valley, satisfied him as to the propriety of advancing by Chalco.
