Battle of Ajnadayn

Battle of Ajnadayn
Part of the Muslim conquest of Syria (Arab–Byzantine wars)
DateJuly/August 634
LocationAjnadayn, Palaestina Prima (now Israel and Palestine)
Result Decisive Rashidun Caliphate victory
Southern Syria and Palestine annexed by Muslims[1]
Byzantine Empire Rashidun Caliphate
Commanders and leaders
Khalid ibn al-Walid
Abu Ubaydah ibn al-Jarrah
Amr Ibn al-As
Sharhabeel ibn Hasana
Yazid ibn Abu Sufyan
Dhiraar bin Al-Azwar
max. 10,000[2] – ca. 20,000[3] max. 10,000[2] – ca. 20,000[3]
Casualties and losses
50,000 (Al-Waqidi),[4]
Modern estimates unknown.
575 (Al-Waqidi)[4]
Modern estimates unknown.

The Battle of Ajnadayn (Arabic: معركة أجنادين) was fought in July or August 634 (Jumada I or II, 13 AH),[2] in an unknown location close to Beit Guvrin in present-day Israel; it was the first major pitched battle between the Byzantine (Roman) Empire and the army of the Arab Rashidun Caliphate. The result of the battle was a decisive Muslim victory. The details of this battle are mostly known through Muslim sources, such as the ninth century historian al-Waqidi.


According to David Nicolle, the Rashidun army left the capital Medina probably in the autumn of 633, but possibly at the beginning of 634. They first engaged and defeated the Byzantines at Dathin on February 4; after that Emperor Heraclius, then stationed in Emesa, had reinforcements sent south to protect Caesarea Maritima. As a possible reaction, commander Khalid ibn al-Walid was ordered to interrupt operations against the Sassanian Empire and reach Syria, which brought him to engage and defeat the Byzantine-allied Ghassanids by April 24, permitting him to enter almost unopposed in Bosra. At this point, Khalid converged with several armies, led by generals such as Abu Ubaydah ibn al-Jarrah, Yazid ibn Abu Sufyan, Amr ibn al-A'as and Shurahbil Ibn Hasanah.[5]

Khalid united with Amr's forces in a place known traditionally as Adjnadayn.[5] The site is placed by the Muslim literary sources somewhere between Ramla and Bayt Jibrin (modern Beit Guvrin, Israel), but is otherwise unattested by any geographer of the period. Based on the region's topography, the historian N. A. Miednikoff suggested that the battle was fought on the Wadi al-Samt river, where lies the twin village of al-Jannaba. According to the hypothesis advanced by Miednikoff and M. J. de Goeje and summarized by L. Caetani, it was from the dual form (al-Jannabatayn) of the village the historical name of the battle emerged, by conflation with the plural for "army", ajnad.[2][6]


Regarding the primary sources, there is an absence of any of Byzantine provenance; possibly, according to Walter Kaegi, because what Byzantine material exists may conflate the battle with other Byzantine defeats, such as Dathin and Yarmouk. The earliest source appears to be an entry in the Frankish Chronicle of Fredegar, compiled in 658-660, unless this is a possible interpolation.[7]

Opposing forces

Regarding the strength of the confronting armies, H. A. R. Gibb in the Encyclopaedia of Islam argues that, at best, both forces were made up of 10,000 men, and that the numbers offered in the Muslim sources are "highly exaggerated", especially as regards the Byzantines.[2] David Morray in the Oxford Companion to Military History, however, places both armies at approximately 20,000 strong.[3]

The Byzantines were led by Heraclius' brother Theodore, as well as by a figure called "Artabun" or "Wardan" in the Muslim sources, evidently a corruption of the Armenian name Vardan.[2][8] The Muslim sources name him as the patrikios (commander) of Emesa, which was the major Byzantine base of operations in Syria in the early period of the Muslim conquests. According to Kaegi, he possibly commanded fresh reinforcements from the north, including Armenians, or from the army that had accompanied Heraclius to Syria. In addition, the army may have also contained local Arab tribal levies.[9] The Arab army consisted of three separate contingents, with either Khalid or, less likely, Amr, as the overall commander.[2][7]

Battle and aftermath

The Byzantines suffered a heavy defeat and were forced to retreat to Damascus.[2] The Arabs suffered heavy casualties, and Muslim tradition records several lists of Companions of Muhammad, including several members of the early Muslim aristocracy, who fell in the battle and were regarded as martyrs.[6] The high number of deaths served to reinvigorate the sense of religious martyrdom among the nascent Muslim community, while the high proportion of Meccan deaths served as a useful counterbalance to the influence of the Medinan Ansar.[6] On the Byzantine side, the Muslim sources report that one of the two commanders, probably Vardan, fell in the battle, but that Theodore escaped and withdrew north where Heraclius replaced him with Vahan and Theodore Trithyrios and sent him to imprisonment in Constantinople.[10] Heraclius himself withdrew from Emesa to the greater safety of Antioch after Ajnadayn, while the surviving Byzantine units fled to the safety of walled towns, and left the countryside undefended before the Muslim raids. The whole of Palestine was thus left open to Muslim raids, especially in the interior parts away from the coastal towns. As a result, panic spread across the region, and large numbers of the rural population also sought safety behind the town walls.[11] After their victory, the Arab army once more broke up into several raiding columns, until they reunited once more to confront another Byzantine attempt at halting the Muslim invasion at the Battle of Fahl six months later.[2]


  1. Irfan Shahid (1996). Review of Walter E. Kaegi (1992), Byzantium and the Early Islamic Conquests. Journal of the American Oriental Society 116 (4), p. 784.
  2. 1 2 3 4 5 6 7 8 9 Gibb 1986, p. 208.
  3. 1 2 3 Morray 2001, pp. 23–24.
  4. 1 2 Lieutenant-General Agha Ibrahim Akram (1970). The Sword of Allah: Khalid bin al-Waleed, His Life and Campaigns, page 467. Nat. Publishing House. Rawalpindi. ISBN 978-0-7101-0104-4.
  5. 1 2 D. Nicolle, Yarmuk 636 AD - The Muslim Conquest of Syria, Osprey, 1994, p. 46.
  6. 1 2 3 Athamina 2014.
  7. 1 2 Kaegi 1995, p. 98.
  8. Kaegi 1995, pp. 98–99.
  9. Kaegi 1995, p. 99.
  10. Kaegi 1995, p. 100.
  11. Kaegi 1995, pp. 100–101.


Coordinates: 31°41′N 34°57′E / 31.683°N 34.950°E / 31.683; 34.950

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