"I know what courage is. Would that all the bravest of us were being
chosen for an ambush, wherein a man's bravery is most manifest. In
it the coward and the courageous man chiefliest appear. The colour of
the one changeth and his spirit cannot be schooled to remain stedfast,
but he shifteth his body, settling now on this foot now on that; his
heart beateth mightily, knocking against his breast as he bodeth death,
and his teeth chatter. But the good man's colour changeth not, nor is
he overmuch afraid when once he sitteth in his place of ambush; rather
he prayeth to join speedily in the dolorous battle."
Yet soon Idomeneus' strength left him; Hector hurried to the centre of the attack, where he confronted Ajax.
At this point Hera determined to prolong the intervention of Poseidon in favour of the Greeks. She persuaded Aphrodite to lend her all her spells of beauty on the pretence that she wished to reconcile Ocean to his wife Tethys. Armed with the goddess' girdle, she lulled Zeus to sleep and then sent a message to Poseidon to give the Greeks his heartiest assistance. Inspired by him the fugitives turned on their pursuers; when Ajax smote down Hector with a stone the Trojans were hurled in flight back through the gate and across the ramparts.
When Zeus awakened out of slumber and saw the rout of the Trojans, his first impulse was to punish Hera for her deceit. He then restored the situation, bidding Poseidon retire and sending Apollo to recover Hector of his wound. The tide speedily turned again; the Trojans rushed through the rampart and down to the outer line of the Greek ships, where they found nobody to resist them except the giant Ajax and his brother Teucer. After a desperate fight in which Ajax single-handed saved the fleet, Hector succeeded in grasping the ship of Protesilaus and called loud for fire. This was the greatest measure of success vouchsafed him; from this point onwards the balance was redressed in favour of the Greeks.
Achilles had been watching the anguish of Patroclus' spirit when this disaster came upon their friends.
"Why weepest thou, Patroclus, like some prattling little child who
runneth to her mother and biddeth her take her up, catching at her
garment and checking her movement and gazing at her tearfully till
she lifteth her? Even so thou lettest fall the big tears."
Patroclus begged his friend to allow him to wear his armour and lead the Myrmidons out to battle, not knowing that he was entreating for his own ruin and death. After some reluctance Achilles gave him leave, yet with the strictest orders not to pursue too far. Fresh and eager for the battle the Myrmidons drove the Trojans back into the plain. Patroclus' course was challenged by the Lycians, whose King Sarpedon faced him in single combat. In great sorrow Zeus watched his son Sarpedon go to his doom; in his agony he shed tear-drops of blood and ordered Death and Sleep to carry the body back to Lycia for burial.
The great glory Patroclus had won tempted him to forget his promise to Achilles. He pursued the Trojans back to the walls of the town, slaying Cebriones the charioteer of Hector. In the fight which took place over the body Patroclus was assailed by Hector and Euphorbus under the guidance of Apollo. Hector administered the death-blow; before he died Patroclus foretold a speedy vengeance to come from Achilles.
A mighty struggle arose over his body. Menelaus slew Euphorbus, but retreated at the approach of Hector, who seized the armour of Achilles and put it on. A thick cloud settled over the combatants, heightening the dread of battle. The gods came down to encourage their respective warriors; the Greeks were thrust back over the plain, but the bravery of Ajax and Menelaus enabled the latter to save Patroclus' body and carry it from the dust of battle towards the ships.
When the news of his friend's death came to Achilles his grief was so mighty that it seemed likely that he would have slain himself. He burst into a lamentation so bitter that his mother heard him in her sea-cave and came forth to learn what new sorrow had taken him. Too late he learned the hard lesson that revenge may be sweet but is always bought at the cost of some far greater thing.