Battle of Thermopylae

On Xerxes’ orders, Leonidas’ body was desecrated-decapitated and then crucified.

An excerpt from the article 31 facts about Battle of Thermopylae

Leonidas’ guards tightly surrounded his body, but the soldiers were too few and no longer had the strength to counterattack, they were killed by arrows and spears. Leonidas’ place of death was covered with Spartan cloaks.