Julius Caesar was 55 years old when he was assassinated on March 15, 44 BC.
Caesar was born on July 12 or 13, 100 BC. His death marked a significant turning point in Roman history, leading to the end of the Roman Republic and the rise of the Roman Empire. His age at death reflects the life of a man who achieved military and political greatness before his untimely end, demonstrating how even influential leaders can face tragic fates.