On Saturday, the governor, with the advice of his captains and monks, arranged that before beginning the march, scouts should be sent in advance to reconnoitre the movements of the Guaycurús, in order that dispositions might be made to attack and drive them from the lands of the Guaranís. So the Indian spies and Christians set forth, and returned at four o'clock in the morning, with the report that the Indians had been hunting the whole day, and that their wives and children were in front of them, and that they did not appear to have any fixed idea of settling anywhere. Upon this being known, it was decided to march at once, as secretly as possible, in pursuit of the enemy, observing the precaution of not lighting fires, and not breaking the ranks for the purpose of hunting or any other motive, in order not to give the enemy an inkling of their whereabouts. These dispositions having been taken, they started in good order, on Sunday morning, and marched at the foot of the forested slopes of the mountains, so as to conceal their movements. The Indian scouts, all picked men and swift of foot, led the advance, returning every now and again to report what they could discover of the enemy.