Roman–Persian wars

Quick Facts: Who was Roman–Persian wars?

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Roman–Persian wars

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A long-running series of conflicts between Roman and Iranian empires.

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2Day Chrono-Wiki & Primary Historical Archives

Origins & Early Life

The Roman–Persian wars, also called the Roman–Iranian wars, took place between the Roman states and the Iranian empires, beginning with the Roman Republic and the Parthian Empire in 54 BC and ending with the Byzantine and the Sasanian empires in 628 AD. While the conflict between the two civilizations did involve direct military engagements, a significant role was played by a plethora of vassal kingdoms and allied nomadic tribes, which served as buffer states or proxies for either side. Despite nearly seven centuries of hostility, the Roman–Persian wars had an entirely inconclusive outcome, as both the Byzantines and the Sasanians were attacked by the Rashidun Caliphate as part of the early Muslim conquests. The Arab-Muslim offensives resulted in the collapse of the Sasanian Empire and largely confined the Byzantine Empire to Anatolia and southeastern Europe for the ensuing Arab–Byzantine wars. Aside from shifts in the north, the Roman–Persian border remained largely stable for the duration of the conflict, albeit subject to an effective tug of war: towns, fortifications, and provinces were continually sacked, captured, destroyed, and traded, but neither side had the logistical strength or manpower to maintain such lengthy campaigns far from their borders, and thus neither could advance too far without risking stretching their frontiers too thin.

Pivotal Works & Achievements

Both sides did make conquests beyond the border, but in time, the balance was almost always restored. Although initially different in military tactics, the Romans and the Persians gradually adopted from each other, and by the second half of the 6th century, they were similar and evenly matched. Ultimately, the expense of resources during the Roman–Persian wars proved catastrophic for both sides, as the prolonged and escalating warfare of the 6th and 7th centuries left them militarily exhausted and vulnerable in the face of the sudden emergence and expansion of the Rashidun army. Benefiting from the two empires' weakened conditions, the Rashidun Caliphate swiftly conquered Persia on the Sasanian front; and the Levant, the Caucasus, and Egypt and the rest of North Africa on the Byzantine front. According to James Howard-Johnston, "from the third century BC to the early seventh century AD, the rival players [in the East] were grand polities with imperial pretensions, which had been able to establish and secure stable territories transcending regional divides".

Enduring Legacy & Impact

The Romans and Parthians came into contact through their respective conquests of parts of the Seleucid Empire. During the 3rd century BC, the Parthians migrated from the Central Asian steppe into northern Iran and established an independent state that steadily expanded at the expense of the Seleucids, and through the course of the 2nd and early 1st centuries BC, they had conquered Persia, Mesopotamia, and Armenia. Ruled by the Arsacid dynasty, the Parthians fended off several Seleucid attempts to regain their lost territories, and established several eponymous branches in the Caucasus, namely the Arsacid dynasty of Armenia, the Arsacid dynasty of Iberia, and the Arsacid dynasty of Caucasian Albania. Meanwhile, the Romans expelled the Seleucids from their territories in Anatolia in the early 2nd century BC, following the defeat of Antiochus III the Great at Thermopylae and Magnesia. Finally, in 64 BC, Pompey conquered the remaining Seleucid territories in Syria, extinguishing their state and advancing the Romans' eastern frontier to the Euphrates, where it met the territory of the Parthians.

Historical Fact-Check Quiz: Roman–Persian wars

True or False: “The conflict between Rome and Persia was entirely decided by the early Muslim conquests, leading to immediate Roman victory over all rivals.”

Answer (FALSE ❌): The outcome was inconclusive; both the Byzantines and Sasanians were attacked by the Rashidun Caliphate, which caused their respective collapses.

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