World at War  /  Conflicts  /  Recorded History
World at War

Roman–Persian Wars

92 BC – 628 AD Middle East / Anatolia Status: ended Casualties: Unknown — millions over 7 centuries

The longest conflict in ancient history, spanning seven centuries from 92 BC to 628 AD. Byzantine–Sassanid wars of 602–628 AD both fatally weakened both empires, enabling the rapid Arab Muslim conquest of Persia and the Levant.

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Belligerents

  • Rome / Byzantine Empire
  • Parthian / Sassanid Persia

Casualties

Unknown — millions over 7 centuries

From World at War, an interactive atlas by Jairus Pereira. Figures are approximate, drawn from Wikipedia, UCDP, ACLED and academic sources — a design artefact, not an authoritative register. Contact.