Arenales, while encamped at Tumina, received information that Blanco, resuming the offensive, had forced the passes of Herradura and Petacas, and had dispersed the division under Warnes. He at once marched towards the scene of action, and met Warnes at the head of only three hundred men. The latter, learning wisdom by his reverses, placed himself under his orders. Blanco had in the meantime taken the city of Santa Cruz, and was now coming in search of them with six hundred men, of whom one-half were regular infantry.
On the 24th May the Royalists came in sight, and the Patriots retreated by a narrow defile, leaving a small party to draw on the enemy. At dawn on the 25th they reached the town of La Florida, on the river Piray. Arenales took up a position on the right of this small river, in an open space where the bank was about two yards high. Below, the river spread out, while in front lay a wide plain. His flanks were protected by dense brushwood; the town was behind him. He planted his guns on the open, placed his cavalry in ambuscade on each flank, with Warnes in command on the right and De la Riva on the left. At the foot of the bank he opened a trench, concealed by sand and brushwood, where he stationed his infantry, kneeling, and awaited the attack. His entire force numbered about eight hundred men.
Just before noon the same day a dropping fire was heard in the woods in front. It came from the outpost, who were retreating before the enemy. Soon after that the Royalist column debouched from the wood, preceded by skirmishers. Blanco drew up his men on the plain, with strong cavalry reserves on the flanks, and opened fire with his four-pounders. Then, as the infantry advanced firing, the Patriot guns opened upon them. When the skirmishers entered the river, the entrenched infantry poured in a volley, and, springing from their shelter, charged through the smoke with such impetuosity that, aided by the cavalry on the left, they completely routed the enemy, Colonel Blanco remaining dead upon the field.
