small bodies of three each, were directed to charge as soon as the firing had made an impression on the enemy.  While advancing in this order, Sandoval perceived the Mexican forces drawn up in three large columns or dense battalions, and thought proper to change his original plan, and to endeavour to break through them by a cavalry charge.  Placing himself, therefore, at the head of the cavalry, he immediately proceeded to the charge, exclaiming, “St Jago! fall on, comrades!” The main body of the enemy was partly broken by this charge, but immediately closed again and stood firm; and the nature of the ground was so much in favour of the Mexicans, that Sandoval found it necessary to endeavour to drive them from their post in the manner first proposed, into the open ground in the rear.  For this purpose he made the musketeers and crossbow-men attack the enemy in front, and those armed with swords and targets to turn their flanks, ordering also the allies to come forward to the attack, and directed the cavalry to be ready to charge at an appointed signal.  Our troops at length forced them to retreat, but they immediately occupied another strong position in their rear, so that Sandoval and the cavalry were unable to make any considerable impression upon them.  In one of the charges in this difficult broken ground, the horse of Gonzalo Dominguez fell with him, and he was so much injured that he died in a few days afterwards:  His loss was much regretted by the army, as he was esteemed as brave as either Sandoval or De Oli.  Our army broke the enemy a second time, and pursued them to the town, where they were suddenly opposed by not less than 15,000 fresh warriors, who endeavoured to surround our troops:  But Sandoval caused them to be attacked on both flanks, when they fled towards the town, endeavouring however to make a stand behind some recently constructed works; but our troops followed them up so vigorously that they had no time to rally, and were constrained to take shelter in the town.  As his troops were much fatigued, and had got hold of a good supply of provisions, Sandoval thought proper to allow them some repose, and they began to prepare their victuals, in which they were soon interrupted by an alarm of the enemy approaching.  They were ready for action in a moment, and advanced to meet the enemy, fortunately in an open place; where, after a smart action, the enemy were constrained to retreat behind their works; but Sandoval pushed on the advantage with so much impetuosity, that he soon drove them from their works, and compelled them to evacuate the town with the utmost precipitation.