But, although Godfrey himself is proof against all Armida's blandishments, his knights are not, and among those who succumb to the lady's charms is his own brother Eustace, who begs his permission to take ten knights and accompany the damsel to Damascus. Although Armida professes great gratitude for this help, she entices many other Crusaders to desert the camp, by casting languishing glances at them and making each man whom she looks upon believe she loves him only.

All arts th' enchantress practised to beguile
Some new admirer in her well-spread snare;
Nor used with all, nor always the same wile,
But shaped to every taste her grace and air:
Here cloister'd is her eye's dark pupil, there
In full voluptuous languishment is roll'd;
Now these her kindness, those her anger bear,
Spurr'd on or check'd by bearing frank or cold,
As she perceived her slave was scrupulous or bold.

Canto V. Not content with beguiling many knights, Armida further foments a quarrel between Rinaldo and Gernando, Prince of Norway, in regard to the command of the Adventurous Band, which is now without a leader. In the course of this quarrel, Rinaldo is so sorely taunted by his opponent that, although the Crusaders are pledged not to fight each other, he challenges and slays Gernando. Then, afraid to be called to trial and sentenced to death for breaking the rules of the camp, Rinaldo flees to Egypt.

On perceiving how greatly his army is weakened by the desertion of so many brave men, Godfrey is dismayed—all the more so because he hears the Egyptian army is coming to attack him, and because the supplies which he expected have been cut off.

Canto VI. The Egyptian army boasts of no braver warrior than Argantes, who sallies forth to challenge the Christians, bidding Clorinda follow him at a short distance, and come to his rescue should it be necessary. Although Argantes has summoned Godfrey to come forth and fight him, it is Tancred who is chosen as champion for the Christians, but as he draws near his opponent a glimpse of the fair Clorinda's face makes him forget everything but her.

He noted not where the Circassian rear'd
His frightful face to the affronted skies,
But to the hill-top where his Love appear'd,
Turn'd, slack'ning his quick pace, his am'rous eyes,
Till he stood steadfast as a rock, all ice
Without, all glowing heat within;—the sight
To him was as the gates of Paradise;
And from his mind the mem'ry of the fight
Pass'd like a summer cloud, or dream at morning light.

One of the knights in his train, seeing he is not going to fight, spurs forward and meets Argantes, by whom he is defeated. On seeing this knight fall, Tancred, suddenly brought to his senses, starts forward to avenge him, and combats with such fury that Argantes' armor fairly rings with the blows which rain down upon him. Argantes, however, is nearly as brave as Tancred, so the battle rages until nightfall, when the heroes are separated by the heralds, although both vow they will renew the struggle on the morrow. But, when they have ceased fighting and both discover they have serious wounds, their respective armies decree a six-days' truce and pledge themselves to await the result of the duel.

The wounded Argantes has returned to Jerusalem, where Erminia uses her magic balsams to heal his wounds, secretly wishing meanwhile that she might lavish her care upon Tancred, whom she still loves. So ardent is her desire to behold him, that she finally appropriates Clorinda's armor and rides off to the Christian camp, sending a messenger ahead to announce a lady is coming to heal Tancred if he will give her a safe-conduct to his tent. Tancred immediately sends word the lady will be welcome, but meanwhile the Christians, catching a glimpse of the waiting Erminia, and mistaking her for Clorinda owing to her armor, endeavor to capture her.

Canto VII. To escape from her pursuers, Erminia flees into a trackless forest, where, after wandering some time, she meets a shepherd, who gives her an asylum in his hut. There she turns shepherdess, but does not forget Tancred, whose name she carves in many a tree. Meantime the news spreads through the camp that Clorinda has been seen and is even now closely pursued by a troop of Christians. Hearing this Tancred, disregarding his wounds, sets out to find her. While wandering thus in the forest, weakened by loss of blood, he is captured by Armida, the enchantress, who detains him in a dungeon, where he eats his heart out for shame because he will not be able to respond when the trumpets sound for the renewal of his duel with Argantes.

The moment having come for this battle and the Crusaders' champion being absent, old Count Raymond volunteers to meet Argantes, and is about to get the better of him, when an archer from the wall suddenly discharges a shaft at him. Such treachery exasperates the Christians, who, exclaiming the truce has been broken, precipitate themselves upon their foes, and in the general battle which ensues many deeds of valor are performed.