Answer:
He infiltrated Troy's walls with the use of the Trojan horse which had soldiers hidden inside.
It shows how cunning and a critical thinker Odyssey is.
King Odyssey of Ithaca and other Greek forces were suffering heavy losses as they besieged Troy and after many years of war, the Greek were ready to count their losses and go home, then Odyssey came up with his clever plan of the Trojan horse which worked to great effect.