The Year of the Four Emperors

69 CE — Roman Empire, Rome

Today: The Roman Empire (Rome and the frontier legions)

When Nero's fall left no heir, four men claimed the throne in a single year, each raised up and then destroyed by the armies backing him, until the general Vespasian prevailed. The lesson Rome learned in blood: when the rule for transferring power is unclear, the succession is decided by whoever commands the troops — a flaw that would haunt states from Byzantium to the Ottoman sultans.

Worth knowing: One of 69 CE's short-lived emperors, Vitellius, was so devoted to feasting that he reportedly held four banquets a day and sent the navy to fetch delicacies — before the next claimant killed him within months.

Pattern: Succession / legitimacy crisis — The orderly transfer of power fails because no rule or claimant is accepted as legitimate.

Entry 69 of 240 in Precedent, a walk through the whole human story in order.