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Battle of Actium

31 BC

The naval battle fought off Actium on 2 September 31 BCE, where Octavian's forces defeated the fleet of Mark Antony and Cleopatra VII.

Illustrated reconstruction of oared Roman-era war galleys facing one another off Actium
Reconstruction note: This educational reconstruction is not a primary-source image of the event.
Period
31 BC
Kind
Battle
Regions
Europe, Africa
Keywords
Battle of Actium · background · course · outcome

Follow the story · Four stages

  1. Background

    The alliance behind the Second Triumvirate had collapsed into a struggle for control of the Roman world. Octavian framed the conflict as a foreign war against Cleopatra, a political strategy that obscured its character as a Roman civil war.

    • The alliance behind the Second Triumvirate had collapsed into a struggle for control of the Roman world.
    • Octavian framed the conflict as a foreign war against Cleopatra, a political strategy that obscured its character as a Roman civil war.
    • Core event: The naval battle fought off Actium on 2 September 31 BCE, where Octavian's forces defeated the fleet of Mark Antony and Cleopatra VII.
    Illustrated reconstruction of the background of Battle of Actium
  2. Course

    Agrippa's earlier naval operations strained Antony's supply lines and freedom of movement. During the battle, Cleopatra's squadron and Antony broke through and sailed south; the forces left behind later surrendered. Historians continue to debate their plan and many tactical details.

    • Agrippa's earlier naval operations strained Antony's supply lines and freedom of movement.
    • During the battle, Cleopatra's squadron and Antony broke through and sailed south; the forces left behind later surrendered.
    • Historians continue to debate their plan and many tactical details.
    Illustrated reconstruction of the course of Battle of Actium
  3. Outcome

    Octavian captured Alexandria in 30 BCE, after which Antony and Cleopatra died. The Ptolemaic kingdom ended and Egypt came under Roman control, leaving Octavian without a comparable rival.

    • Octavian captured Alexandria in 30 BCE, after which Antony and Cleopatra died.
    • The Ptolemaic kingdom ended and Egypt came under Roman control, leaving Octavian without a comparable rival.
    • Process producing the result: Agrippa's earlier naval operations strained Antony's supply lines and freedom of movement. During the battle, Cleopatra's squadron and Antony broke through and sailed south; the forces left behind later surrendered. Historians continue to debate their plan and many tactical details.
    Illustrated reconstruction of the outcome of Battle of Actium
  4. Historical significance

    Actium cleared the way for Octavian to become Augustus in 27 BCE and for a new form of one-man rule at Rome. The familiar dramatic story is deeply shaped by the victor's propaganda and later authors such as Plutarch, so disputed anecdotes cannot be treated as settled fact.

    • Actium cleared the way for Octavian to become Augustus in 27 BCE and for a new form of one-man rule at Rome.
    • The familiar dramatic story is deeply shaped by the victor's propaganda and later authors such as Plutarch, so disputed anecdotes cannot be treated as settled fact.
    • Immediate consequence: Octavian captured Alexandria in 30 BCE, after which Antony and Cleopatra died. The Ptolemaic kingdom ended and Egypt came under Roman control, leaving Octavian without a comparable rival.
    Illustrated reconstruction of the significance of Battle of Actium

Related figures

Related events

  1. 51 BC

    Prelude

    Battle of Actium: a scene of the prelude

    Prelude — Background: The alliance behind the Second Triumvirate had collapsed into a struggle for control of the Roman world. Octavian framed the conflict as a foreign war against Cleopatra, a political strategy that obscured its character as a Roman civil war.

  2. c. 32 BC

    Rising tension

    Battle of Actium: a scene of rising tension

    Rising tension — Build-up: Agrippa's earlier naval operations strained Antony's supply lines and freedom of movement. During the battle, Cleopatra's squadron and Antony broke through and sailed south; the forces left behind later surrendered. Historians continue to debate their plan and many tactical details.

  3. 31 BC

    Battle of Actium

    Current event

    Battle of Actium: the central event

    Battle of Actium — Central transition: The naval battle fought off Actium on 2 September 31 BCE, where Octavian's forces defeated the fleet of Mark Antony and Cleopatra VII.

  4. c. 30 BC

    Immediate aftermath

    Battle of Actium: the immediate aftermath

    Immediate aftermath — Immediate result: Octavian captured Alexandria in 30 BCE, after which Antony and Cleopatra died. The Ptolemaic kingdom ended and Egypt came under Roman control, leaving Octavian without a comparable rival.

  5. c. 21 BC

    Long-term significance

    Battle of Actium: a scene of long-term significance

    Long-term significance — Long-term significance: Actium cleared the way for Octavian to become Augustus in 27 BCE and for a new form of one-man rule at Rome. The familiar dramatic story is deeply shaped by the victor's propaganda and later authors such as Plutarch, so disputed anecdotes cannot be treated as settled fact.

Sources