On the 21st of February, the positive advance of that chief was announced. The camp was immediately broken up, and all our forces rapidly concentrated in the gorge of Angostura. Our troops did not amount to more than four thousand six hundred and ninety efficient men, while we had reason to believe that Santa Anna commanded nearly five times that number and was greatly superior to us in cavalry, a part of which, had been sent by secret paths through the mountains, to the rear of our position, so as to cut off our retreat, in the event of our failure in the battle.
The great object of Taylor in selecting his ground and forming his plan of battle, was to make his small army equal, as near as possible, to that of Santa Anna, by narrowing the front of attack, and thus concentrating his force upon any point through which the Mexicans might seek to break. In other words, it was his design to dam up the strait of Angostura with a living mass, and to leave no portion of the unbroken ground on the narrow table-land undefended by infantry and artillery. The battle ground that had been selected was admirably calculated for this purpose; and his foresight was justified by the result. It was not necessary for Taylor to capture, or annihilate his enemy, for he was victor, if with, but a single regiment, he kept the valley closed against the Mexicans. The centre of the American line was the main road, in which was placed a battery of eight pieces, reduced, during the action to five, supported by bodies of infantry. On the right of the stream, which swept along the edge of the western mountains, was a single regiment and some cavalry, with two guns, which it was supposed, would be sufficient, with the aid of the tangled gulleys to arrest the Mexicans in that quarter. On the left of the stream, where the ravines were fewer, and the plain between them wider, stood two regiments of infantry, suitably furnished with artillery, and extending from the central battery on the road, to the base of the eastern mountains, on whose skirts an adequate force of cavalry and riflemen was posted.
In order to break this array, Santa Anna divided his army into three attacking columns, each of which nearly doubled the whole of Taylor's force. One of these, was opposed to the battery of eight guns in order to force the road, and the other two were designed to outflank our position by penetrating or turning the squadrons stationed at the base of the mountains.
On the afternoon of the 22d of February, the attack began by a skirmishing attempt to pass to the rear of our left wing; but as the Mexicans climbed the mountain, in their endeavor to outflank us
