Yeah actually Trojans were the ones in the city. Their walls were penetrated by the enemy, who snuck in under the guise of a gift.
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Not sure that's any better though.
"Thousands" Yeahh just make that like 6. They (Greeks) snuck out when everyone was drunk and tired from celebrating the won war and opened the gates of Troje after killing the drunken nightguards while the rest of the people were sleeping.
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Not sure that's any better though.