On the morning of Thursday, the 9th December, 1824, the sun rose gloriously over the peaks of the eastern Cordillera. Sucre galloped from end to end of his line, telling his men that on their valour that day hung the destinies of South America. At nine in the morning the Royalists descended from the heights to the attack. At ten o'clock they debouched upon the plain, and the left and centre advanced in mass, led by the Viceroy himself. The Royalist right, under Valdés, was the first to engage, and drove in the Patriot skirmishers; but the Peruvian infantry stood firm, and a battalion of Columbians was sent to aid them.
Sucre then ordered Cordoba to charge with the right wing, supported by Miller's cavalry. The young general, who was only twenty-five years of age, advanced rapidly in two parallel columns, and threw himself with great impetuosity upon the Royalist centre. Eight squadrons of Royalist cavalry who charged him were driven back by the Columbian horse under Silva. Monet, whose division had not yet been engaged, came to the assistance of the left centre, but was attacked by the reserve under Lara, and driven back in confusion. Three more squadrons were then thrown forward, and were exterminated by the Columbian lancers. La Serna strove in vain to rally his disordered soldiery; he was borne from his horse with six wounds, and made prisoner, with more than 1,000 of his men.
Meantime Valdés had turned the left flank of the Patriots, and the Peruvian division, under La Mar, began to give way, when the Columbian battalion came to their assistance, followed by the Peruvian hussars and the Argentine grenadiers, led by Miller, who charged with such fury that the Royalist infantry were thrown into confusion, and all the guns were captured.
It was one o'clock, Valdés in despair, sat down on a rock, waiting for death; but his officers forced him away, back to the heights, where many of the Royalist generals were already assembled, with such troops as they could
