_Imperial_ was besieged with much vigour; and the young Caupolican, unwarned by the experience of his father, endeavoured to seduce the loyalty of the Spaniards’ auxiliaries. His two emissaries were, however, discovered and impaled within sight of his army, whilst one hundred and twenty of the auxiliaries were hung upon the ramparts. This, however, did not discourage the Araucanian general, who made a violent assault in which his life was exposed to great danger. He even effected an entrance into the city by night, followed by Tucapel and others, but he was repulsed by _Don_ Garcia, whose vigilance was present everywhere, and he owed his safety to a bold leap from the bastion. He wanted patience for the slow prosecution of the siege; and he therefore resolved to abandon it, and employ his arms against Reynoso, in the hope of avenging the death of his father. That officer, however, being joined by Mendoza, was in a position to thwart his attempts. It may be remarked, as a feature of this war, that Reynoso had before this agreed to submit the question between himself and his opponent, Millalauco, to the issue of single combat. The duel took place, but without either combatant obtaining the advantage. The following campaign was marked by several encounters, some of them favourable to the Araucanians, who, however, saw their numbers fast decreasing before the firearms of their enemies, whilst the Spaniards, on the other hand, were constantly recruited from _Peru_ and from Europe. Caupolican therefore intrenched himself between _Canete_ and _Conception_ at a place called _Quipeo_. _Don_ Garcia immediately marched thither to dislodge him. Whilst he delayed his attack in the hope of drawing the Araucanians from their strong position, several skirmishes took place, in one of which Millalauco was made prisoner. This fearless warrior, regardless of his situation, severely reproached the Spanish commander with his cruelties, of which he was about to furnish another conspicuous example, being ordered by Mendoza to be impaled on the spot. At this time, Andrew, the native who at the siege of _Imperial_ had betrayed Pran, the secret agent of the elder Caupolican, was now sent by _Don_ Garcia to persuade the Araucanian general, under threats of the direst punishment, to submit to his authority. The threats were no doubt meant in all earnest; but the messenger was ill-chosen, for it was with the utmost difficulty that the Araucanian could restrain himself from executing personal vengeance upon the betrayer of his father. Unlike Charles XII., however, in the case of Patkul, he respected the character of an ambassador. He was not, however, long to wait for his revenge. Andrew being a day or two afterwards caught as a spy, was suspended by his feet from a tree and suffocated with smoke.