(9) ROMAN-PERSIAN WARS

 

The first world war, fought intermittently on the frontier between successive Roman and Persian polities over almost seven centuries.

No, seriously. Well, half seriously.

The Roman-Persian Wars were a world war, or war between two different worlds – that might have been fought on the frontier between them, a little like the Western Front writ large (and long) but had ramifications or repercussions throughout both empires that extended across Eurasia from Britain to India.

And that comparison to the First World War’s Western Front writ large and long stands. Despite seven slugging centuries of grinding war, the Roman-Persian border remained remarkably stable.

“One has the impression that the blood spilled in the warfare between the two states brought as little real gain to one side or the other as the few meters of land gained at terrible cost in the trench warfare of the First World War.”

That is, until the last dramatic phase of the wars, the Byzantine-Sasanian War of 602-628 – which might be compared to the similarly abrupt and dramatic reversals of fortune in 1917-1918 that ultimately saw the end of the First World War. However, even that last war of the Roman-Persian Wars effectively ended with the restoration of the status quo (and border) between the two empires.

The Roman-Persian Wars are an interesting contrast to those other Persian Wars of antiquity, the Greek-Persian Wars, in lacking the same existential stakes or outcomes – with the Greek city-states desperately defending themselves from outright conquest by the Achaemenid Persian Empire in the classical Greek-Persian Wars, and Alexander the Great conquering that same empire outright in his Macedonian-Persian Wars.

The latter always struck me as incredible in contrast to the failure of the Romans, more powerful and commanding more resources than either Alexander or their own Persian adversaries, to achieve anything like Alexander’s decisive defeat and conquest of Persia. That is despite the Romans, at least emperors Caracalla and Julian, expressly seeking to emulate Alexander. The reality seems to have been that for the most part neither side did little more than essentially raid each other over the frontier, with the Romans famously sacking the Persian capital Ctesiphon numerous times.

The Roman-Persian Wars might be classified into four phases, corresponding to three successive Roman polities and two Persian ones – not to mention Armenia bouncing back and forth between the two empires as client state or protectorate.

First, there was Roman Republic against the Parthians – initiated by the invasion of Mesopotamia by Roman general Crassus, which saw one of the Republic’s most crushing defeats at the Battle of Carrhae in 53 BC. However, the Parthians did nothing to exploit this defeat or the subsequent civil wars of the Republic with one notable exception, as they generally sought to remain on peaceful terms with the Romans. That notable exception was their support of the so-called Liberators – the assassins of Julius Caesar – and invasion of the Roman eastern provinces after the Liberators’ defeat. The Romans defeated the Parthian invasion, but the Parthians then defeated the retributive campaign by Mark Antony against them.

Second, there was the Roman Empire against the Parthians, which saw five major wars between them, mostly to the defeat of the Parthians with their capital Ctesiphon sacked three times and four Roman emperors claiming the title of Persicus Maximus. Those wars were the Roman-Parthian War of 58-63 AD (with the Roman campaign led by the general Corbulo under emperor Nero), Trajan’s campaign into Parthia, the Roman-Parthian War of 161-166 AD under Roman emperor Lucius Verus (the co-emperor of Marcus Aurelius), the campaign of Roman emperor Septimius Severus in 195-197 AD, and finally the Parthian War of Caracalla in 216-217 AD.

Third, there was the Roman Empire against the Sassanids or Sasanians, successors to the Parthians. The Sassanids were very different to the Parthians in hostile character towards Rome – in the words of Youtuber Tominus Maximus, “Sassanid Persia was like Parthia…on cocaine and mixed with crystal meth”. Most famously, there were the Sassanid incursions deep into the Roman eastern provinces during the Crisis of the Third Century, after fighting between them during the reign of Roman emperor Severus Alexander.

However, the Romans subsequently defeated the Sassanids, sacking Ctesiphon a further two times in campaigns led by Roman emperors Carus in 283 AD and Galerius (with Diocletian holding his hand) in 298 AD. The latter was the most decisive Roman victory against the Sassanids, enduring for decades until hostilities resumed in the Perso-Roman Wars of 337-361 AD under Roman emperor Constantius III and the ill-fated expedition by Roman emperor Julian.

Surprisingly, the Sassanids mellowed in the fifth century, remaining mostly peaceful with the Roman Empire while the latter’s western half fell to barbarian invasions. In part that was due to the Sassanids facing off their own barbarian threats, but it was instrumental in the survival of the eastern Roman Empire. Which brings me to…

Fourth, there was the eastern Roman or Byzantine Empire against the Sassanids or Sasanians. While the Persians were only peer state the Romans had as adversary, the classical empire had the advantage in population and resources, albeit that advantage was diluted by more far-flung commitments. After the fall of the western empire, the eastern empire and the Sassanids were much more closely matched.

Not surprisingly then, this saw the most dramatic and mobile phase of the Roman-Persian Wars from the preceding centuries of effective stalemate – with the Byzantine-Sassanid War of 602-628. First the Sassanids almost decisively defeated and conquered the eastern empire, even besieging Constantinople, but were then decisively defeated in turn by a near miraculous eastern Roman recovery under emperor Heraclius – albeit the eastern Roman empire was too weakened to exploit its victory other than regaining its lost territory and effectively restoring the status quo between them.

The ultimate futility of the Roman-Persian Wars came in their aftermath with the event that decisively ended them altogether – the Arab conquests, achieved in large part from both empires being so weakened fighting each other that they were unable to resist their new adversary, with one being completely conquered and the other barely surviving defeat as well as the loss of much of its former territory.

 

RATING: A-TIER (TOP TIER)