This incomprehensible error was the cause of incalculable disasters. The chiefs received orders to march forward, and were constrained to carry them out. Still, when this erroneous resolution had been once formed, the means of execution were selected with extreme prudence. The corvette and brig were ordered to get as near land as they could, in order to protect, by their cross fire, the embarkation of the troops, and sweep the Mexicans, if they offered any opposition. Flying columns were sent off in advance and on the flanks of the army, to clear the way, by making prisoners of any small outposts the enemy might have established. Four principal chiefs commanded strong detachments of mounted freebooters. The four were the Jaguar, Fray Antonio, El Alferez, and Don Felix Paz, whom the reader assuredly did not expect to find under the flag of the rebels, and whom he saw only a few hours back enter the Mexican camp, and hold a secret conference with General Rubio and Colonel Melendez. These four chiefs were ordered by the Commander-in-Chief to prevent any surprise, by searching the forests and examining the tall grass. El Alferez was on the right of the army, Fray Antonio on the left, the Jaguar had the rear guard, while Don Felix, with six hundred sabres, formed the van. One word as to the guerillas of the ex-Mayor-domo of the Larch-tree hacienda. The men who composed his band, raised on lands dependent on the hacienda, had been enlisted by Don Felix. They were Indios _mansos_, vaqueros, and peons, mostly half savages, and rogues to a certain extent, who fought like lions at the order of their leader, to whom they were thoroughly devoted, but only recognising and obeying him, while caring nothing for the other leaders of the army. Don Felix Paz had joined the insurgents about two months previously, and rendered them eminent service with his guerillas. Hence, he had in a short time gained general confidence. We shall soon see whether he was worthy of it. By a singular coincidence, the two armies left their camp at the same time, and marched one against the other, little suspecting that two hours later they would be face to face. CHAPTER VI. THE BATTLE OF CERRO PARDO. The battle of Cerro Pardo was one of those sanguinary days, whose memory a nation retains for ages as an ill-omened date. In order to explain to the reader thoroughly how the events happened which we are about to narrate, we must give a detailed account of the ground on which they took place.