How long did the Trojan War supposedly last in Greek tradition?

In Greek tradition, the Trojan War is famously described as having lasted for 10 years.12

According to these traditional accounts, the conflict began after Paris of Troy eloped with Helen, the wife of the Spartan king Menelaus. In response, a Greek expedition led by Agamemnon besieged the city for a decade before finally achieving victory through the ruse of the Trojan horse. While these legends have been central to Greek mythology for centuries, historians note that the extent to which this 10-year duration reflects actual historical events remains unknown.123