Immediately after this defiance, Carvajal put his troops in motion to attack the royalists, but Centeno thought proper to retire to a more advantageous post, not deeming it prudent to run the risk of a pitched battle, and meaning rather to harass the enemy by means of skirmishes and night attacks. He was likewise in hopes that a good many of those who followed Carvajal might come over to his side as opportunity offered, as he understood many of them were much discontented with the harsh and brutal behaviour of the lieutenant-general, whom they served from fear and constraint, not from attachment. Besides, Centeno was unwilling to run the risk of battle, as Carvajal though inferior in cavalry to the royalist party was greatly superior in point of fire arms. In fact this resolution of retreating was much against the inclination of Centeno, who wished to have given battle to Carvajal; but as all the inhabitants of La Plata on his side opposed that measure, he was obliged to conform to their wishes, yet always determined to give battle on the first favourable opportunity. Centeno accordingly retreated fifteen leagues that day, and was followed by Carvajal with great diligence, insomuch that the hostile parties encamped at night very near each other, on which occasion Carvajal confided the guard of his camp to such of his followers as he could most surely depend upon. Towards midnight, Centeno detached eighty horsemen to assault the camp of the insurgents, which they did accordingly with much spirit, making several discharges of their fire arms, but without any favourable impression; as Carvajal drew up his troops in order of battle, and kept them all night in their ranks, strictly forbidding any one to quit their post on any pretence, lest some might desert over to the enemy. At break of day, Centeno decamped and resumed his march, and was followed by Carvajal with equal diligence always very near. In this second day of the retreat the two parties marched ten leagues, or near forty miles; and towards evening Camijal came up with one of the soldiers belonging to Centeno, who had lagged behind owing to extreme fatigue. Carvajal ordered him immediately to be hanged, swearing that he would treat every one of the enemy who fell into his hands in the same manner.