Battle of Nahavand (642): The Last Stand of Sasanian Persia

The Battle of Nahavand, fought around 642 near the town of Nahavand in the Zagros Mountains of western Iran, was the last great attempt by the Sasanian Persian Empire to stop the Arab Muslim conquests. An Arab army of the Rashidun caliphate lured the Persians out of a strong position and destroyed them. Arab historians called it the “Victory of Victories” because it ended organised Sasanian resistance and opened the Iranian plateau.

Background

The Sasanian Empire had already lost its richest lands. After defeat at the Battle of al-Qadisiyyah around 636, the Arabs captured the capital Ctesiphon in 637 and won again at Jalula later that year. Iraq passed under the control of the new garrison cities of Kufa and Basra.

King Yazdegerd III withdrew to the Iranian plateau. From there he called on the governors and nobles of Iran’s provinces to raise a new army. The Persian force gathered near Nahavand, a strategic point on the route from Mesopotamia through the Zagros towards Hamadan and the interior.

Caliph Umar ibn al-Khattab in Medina had been cautious about advancing into Iran itself. News of the Persian build-up persuaded him to act. He ordered troops from Kufa and Basra, with other contingents, to unite under al-Nu’man ibn Muqarrin, a respected tribal leader and companion of the Prophet Muhammad.

The armies

As with other battles of the conquests, the figures in the sources are not reliable. Arabic chronicles give the Persians 100,000 to 150,000 men and the Arabs around 30,000. Modern historians accept only that the Persians were probably more numerous and that both armies were the largest each side could gather at the time.

The Persian commander is named in Arabic sources as al-Fayruzan (Piruzan); other accounts mention Mardanshah. The Persians had a fortified position near the town, protected by ditches and, according to tradition, by iron caltrops scattered in front of their lines.

What happened

For some time the Persians stayed in their entrenchments, and the Arab attacks made little progress. The Arab commanders then agreed on a ruse. A force under al-Qa’qa ibn Amr attacked and then pretended to flee. The Persians, believing the Arabs were retreating, left their fortified camp in pursuit.

Once the Persian army was in the open, the main Arab force turned on it. The fighting was heavy. Al-Nu’man ibn Muqarrin was killed early in the battle; according to tradition, his death was concealed from the troops and command passed to Hudhayfa ibn al-Yaman. The Persian army broke and fled through narrow mountain passes, where many were killed. Al-Fayruzan was caught and killed during the pursuit near Hamadan, according to the Arabic accounts.

Key people

• Al-Nu’man ibn Muqarrin (died c. 642): leader of the Muzayna tribe, an early convert to Islam and a veteran of the campaigns in Iraq, appointed by Umar to command the united army. He died in the battle.
• Hudhayfa ibn al-Yaman (died 656): a companion of the Prophet who took command after al-Nu’man’s death. Tradition later links him to the call for a standard text of the Quran.
• Yazdegerd III (reigned 632–651): the last Sasanian king, who raised the army but did not lead it in person.
• Umar ibn al-Khattab (caliph 634–644): the caliph who directed the campaign from Medina and, according to tradition, received news of the victory with great relief.

Consequences

Nahavand was the last time the Sasanians put a large royal army into the field. Afterwards, the Arabs faced only local forces raised by provincial governors and nobles. Over the next decade they took Hamadan, Isfahan, Rayy (near modern Tehran), Fars and other regions, often through treaties in which cities agreed to pay tribute.

Yazdegerd III fled further and further east, seeking help from local rulers and even from Tang China. He was killed near Merv, in modern Turkmenistan, in 651. His son Peroz sought refuge at the Tang court, but the dynasty was never restored.

The conquest of Iran was slow and uneven, and some regions resisted or rebelled for many years. Yet within a few generations Iran became part of the Islamic world, while its Persian language and traditions of kingship and administration went on to shape Islamic culture. The Rashidun caliphate and its successors governed a realm that now reached from Egypt to Central Asia.

Timeline

• c. 636: Arab victory at the Battle of al-Qadisiyyah.
• 637: Arabs capture Ctesiphon and win at Jalula.
• 641–642: Yazdegerd III assembles a new army near Nahavand.
• 642 (or 641): Battle of Nahavand; al-Nu’man ibn Muqarrin is killed and the Persian army destroyed.
• c. 642–650: Arab conquest of Hamadan, Isfahan, Rayy and Fars.
• 651: Yazdegerd III is killed near Merv.

Why it matters

Nahavand turned the defeat of Persia into its conquest. It removed the Sasanian monarchy’s last field army, sealed the end of a dynasty that had ruled since 224, and brought Iran into the Islamic world, with lasting effects on the religion, language and politics of the region.