53 BC

Battle of Carrhae

Surena defeats Crassus at the Battle of Carrhae

Surena solved the ancient ammunition problem with logistics: a camel train kept fresh arrows coming, destroying Roman hopes that the horse archers would simply run out.

An afternoon south of Carrhae

On the best-supported modern reconstruction, Crassus's invasion force met Surena's Parthian cavalry south of Carrhae on the afternoon of 6 May, 53 BCE. Encyclopaedia Iranica converts that from 9 June in the irregular Roman civic calendar, which is why summaries variously give May, June, or just the year.

Encyclopaedia Iranica estimates nearly 34,000 Roman heavy infantry, 4,000 cavalry and about 4,000 light infantry against roughly 10,000 Parthian horsemen — 9,000 horse archers and 1,000 armoured cataphracts.

The archers surrounded the Roman formation at a distance and shot while withdrawing, keeping heavily armed infantry under fire without letting it close.

Publius rides out

Crassus sent his son Publius forward with cavalry, light troops and legionary cohorts. The Parthians feigned retreat, isolated the detachment, surrounded it and destroyed it; Publius died.

Surena's men returned to the Roman lines displaying Publius's head, then resumed the missile attack until nightfall.

The line did not simply crumble: after dark the survivors abandoned their wounded and withdrew toward Carrhae, and most of the main body reached it by dawn, though a force under Vargunteius became lost and was destroyed.

Where Crassus actually died

He was not killed negotiating during the battle. His death came later, after the retreat to Carrhae and a further night march toward the Armenian hills, in a scuffle at attempted talks — and ancient accounts disagree over whether a Roman killed him to prevent capture or the Parthians did.

Plutarch's totals of 20,000 killed and 10,000 captured cover the whole campaign, not one engagement; Iranica reckons about 10,000 survivors reached Syria.

Nor did the battle dissolve a constitutional body: the "First Triumvirate" is a modern name for an informal personal alliance, and Crassus's death accelerated a political breakdown rather than ending an institution on the field.

Sources

Researched 24 Aug 2026 4 sources not yet audited Date disputed

How this was checked

Researched from the web into a fact sheet and rewritten from that sheet. This article has not yet had an independent model audit. How the pipeline works →

Date disputed. Sources disagree; the research places it at -0053-05-06.

What the sources leave uncertain

Encyclopaedia Iranica reconstructs the battle's beginning as May 6 in the modern calendar, corresponding to June 9 in the irregular Roman civic calendar. Many summaries therefore give May, June, or only 53 BCE.
The detailed narratives come principally from Plutarch and Cassius Dio, both writing long after the battle and drawing on earlier works now lost.
Ancient sources disagree about the intentions behind Surena's negotiation offer and about who killed Crassus.
The casualty totals are ancient estimates for the whole campaign, not independently verified counts from the battlefield.