WThe Battle of Baghdad was fought between the forces of the Buyid Emirate of Iraq under Mu'izz al-Dawla and the Hamdanid Emirate of Mosul under Nasir al-Dawla within the city of Baghdad. The battle lasted for several months; it eventually ended in victory for the Buyids, who expelled the Hamdanids from Baghdad with a major offensive and secured control of the city.
WThe Battle of Bagrevand was fought on 25 April 775, in the plains of Bagrevand, between the forces of the Armenian princes who had rebelled against the Abbasid Caliphate and the caliphal army. The battle resulted in a crushing Abbasid victory, with the death of the main Armenian leaders. The Mamikonian family's power in particular was almost extinguished. The battle signalled the beginning of large-scale Armenian migration into the Byzantine Empire.
WThe Battle of Basra was a major engagement of the Zanj Rebellion, fought on September 7–10, 871. Zanj rebels and allied Arab tribesmen, led by Yahya ibn Muhammad al-Azraq and 'Ali ibn Aban al-Muhallabi, launched a coordinated attack against the city of Basra. The city’s defenders, consisting of a small contingent of Abbasid regular troops and local Basran militia, were quickly overwhelmed, and the Zanj were able to enter the city, after which they massacred its inhabitants and engaged in a several-day period of looting.
WThe Battle of the Zab, also referred to in scholarly contexts as Battle of the Great Zāb River, took place on January 25, 750, on the banks of the Great Zab River in what is now the modern country of Iraq. It spelled the end of the Umayyad Caliphate and the rise of the Abbasids, a dynasty that would last from 750 to 1258 which is divided in to two periods: Early Abbasid period (750-940) and Later Abbasid period (940-1258).
WThe Battle of Dayr al-Aqul was fought on April 8, 876, between forces of the Saffarid ruler Ya'qub ibn Laith and the Abbasid Caliphate. Taking place some 80 km southeast (downstream) of Baghdad, the battle ended in a decisive victory for the Abbasids, forcing Ya'qub to halt his advance into Iraq.
WThe Battle of Kopidnadon or Kopidnados took place in September 788 between the armies of the Abbasid Caliphate and the Byzantine Empire. The Abbasid army launched an invasion of Byzantine Asia Minor, and was confronted by a Byzantine force at Kopidnadon. The resulting battle was an Abbasid victory. Among the Byzantine losses was a certain Diogenes, who is identified by some scholars with the probable original source for the literary hero Digenes Akritas.
WThe Battle of Krasos was a battle in the Arab–Byzantine Wars that took place in August 804, between the Byzantines under Emperor Nikephoros I and an Abbasid army under Ibrahim ibn Jibril. Nikephoros' accession in 802 resulted in a resumption of warfare between Byzantium and the Abbasid Caliphate. In late summer 804, the Abbasids had invaded Byzantine Asia Minor for one of their customary raids, and Nikephoros set out to meet them. He was surprised, however, at Krasos and heavily defeated, barely escaping with his own life. A truce and prisoner exchange were afterwards arranged. Despite his defeat, and a massive Abbasid invasion the next year, Nikephoros persevered until troubles in the eastern provinces of the Caliphate forced the Abbasids to conclude a peace.
WThe Battle of al-Mada'in was fought near al-Mada'in in central Iraq between the armies of the Hamdanids and the Baridis, for control over Baghdad, the capital and seat of the Abbasid Caliphate, that was around 22 kilometres (14 mi) away and then under control of the Hamdanids. In a fiercely contested battle over four days that cost both sides many casualties, the Hamdanid army prevailed. They were too exhausted to pursue, however, which allowed the Baridis to withdraw to Wasit and then Basra.
WThe Battle of Lalakaon, or Poson or Porson, was fought in 863 between the Byzantine Empire and an invading Arab army in Paphlagonia. The Byzantine army was led by Petronas, the uncle of Emperor Michael III, although Arab sources also mention the presence of Emperor Michael. The Arabs were led by the emir of Melitene (Malatya), Umar al-Aqta.
WThe Battle of Mecca was an armed skirmish fought in 883 between the forces of the Tulunid ruler of Egypt and Syria, Ahmad ibn Tulun, and those of the Abbasid Caliphate, supported by the Saffarid emirate. The battle took place at Mecca in western Arabia and was fought to determine who would gain guardianship over the city during the annual pilgrimage. It ended with an Abbasid-Saffarid victory and the expulsion of the Tulunid forces from Mecca.
WThe Zanj occupation of al-Ubulla was an event of the Zanj Rebellion, occurring on June 28, 870. Zanj troops dispatched by their leader 'Ali ibn Muhammad advanced against the city of al-Ubulla on the Tigris and launched an attack against it. Despite a defense set up by the Abbasid government to protect the city, it was successfully stormed and taken by the rebels. Much of al-Ubulla was destroyed and many of its inhabitants were killed during the assault.
WThis Battle of Rayy was fought on May 1, 811 CE as part of an Abbasid civil war between the two half-brothers, al-Amin and al-Ma'mun.
WThe Battle of Talas or Battle of Artlakh was a military engagement between the Abbasid Caliphate along with its ally, the Tibetan Empire, against the Chinese Tang dynasty. In July 751 AD, Tang and Abbasid forces met in the valley of the Talas River to vie for control over the Syr Darya region of central Asia. After several days of stalemate, the Karluk Turks, originally allied to the Tang, defected to the Abbasids and tipped the balance of power, resulting in a Tang rout.
WThe Battle of Tawahin was fought in 885 between the forces of the Abbasid Caliphate under Abu'l-Abbas ibn al-Muwaffaq and the autonomous Tulunid ruler of Egypt and Syria, Khumarawayh. The battle took place near Ramlah and ended with a Tulunid victory.
WThe Battle of the Barges or Day of the Barges was fought on October 24, 869 near Basra. It was one of the first major engagements of the Zanj Rebellion, taking place less than two months after the outbreak of the revolt.