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In page Crucifixion:

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In 332 BCE, Alexander the Great is reputed to have crucified 2,000 survivors from his siege of the Phoenician city of Tyre,[5] as well as the doctor who unsuccessfully treated Alexander's lifelong friend Hephaestion. Some historians have also conjectured that Alexander crucified Callisthenes, his official historian and biographer, for objecting to Alexander's adoption of the Persian ceremony of royal adoration.[citation needed]