Abbasid Al Mu'tasim & Theophilos Byzantines

822 CE - Constantinople
Theophilos was crowned as co-emperor of Amorian dynasty. He follows his predecessor's policy of Iconoclasm, issuing an edict in 832 forbidding the veneration of icons.
During his reign Eastern Roman Empire was under threat by Bulgarian Empire, Aghlabid in Sicily, Andalusian in Crete, Rus' from Ukraine and Abbasid Caliphate in Anatolia

828 CE - Alexandria
Venetian merchants stole relic of St. Mark body from Egyptian Church in Abbasid Egypt and took it to Venice. The relic was covered by pork & cabbage to to prevent the Abbasid custom from inspecting it too closely. While relic of St. mark head remains in Alexandria. The relic then kept privately by Venetian Doge (Duke) until the construction of Basilica two centuries later.

833 CE - Baghdad
Al-Mu'tasim proclaimed as Abbasid Caliph. He recruited more Turkic people as mercenary battling in Anatolian frontiers. Al-Mu'tasim also formed elite Turkish corps (Shurṭa) under general Ītākh. Turkic people lives near the Black sea all the way to central asia.
The Corps acted as caliph personal bodyguard, among them was prominent soldier Wasif al-Turki.
He appointed Turkic Heydar Nasr from Bukhara as Governor-general of Egypt controlling Egypt, Syria and Jazira (North Iraq).
During his reign, Great astronomers Ahmad al- Farghani (Alfraganus) from Central Asia writes his observation to astronomy in 'Kitāb fī Jawāmiʿ ʿIlm al-Nujūm'. The translated book in latin later used by Colombus to estimate for the Earth's circumference.

836 CE - Bulgaria
Emperor Theopilus battling the Bulgars in Thrace. The Bulgars under Khan Malamir retaliate and captured Philippopolis (Plovdiv), then continue pushing Eastern roman army all the way to Adrianople (Edirne). The Romans are forced to peace.

836 CE - Iraq
Al Mu'tasim founded the new capital city of Samarra near Baghdad.

837 CE - Anatolia
Emperor Theopilus led Eastern Roman Army battling the Abbasids and captured Melitene, and moving all the way to Sōzópetra (Doğanşehir), bithplace of Caliph Al-mu'tasim.
Abbasid forces dealing with revolt unable to mount serious defence, and left the Eastern roman army with minimum resistance.
After capturing Sōzópetra, the Romans execute all male prisoners. Theophilus then return to Constantinople with triumph.

838 CE - Western Anatolia
Caliph Al-Mu'tasim led an Abbasid army retaliate to Roman attack. Abbasid forces marching in two direction converging to Amorium, birthplace of Emperor Theophilus.
The army was divided under Governor Umar al-Aqta & turkish cavalry in the north and Main Abbasid army under Caliph Al-Mu'tasim in the center.

838 CE - Northern Anatolia
Eastern roman forces under Emperor Theophilus confronted Abbasid Northern contingent near Dazimon (Dazmana). Numerically superior Roman army initially successful pushing the Abbasid. Later Abbasid turkish horse-archers manage to deal a severe blow to the Roman army.
Emperor Theophilos was surrounded and forced to flee from the battlefield.

838 CE - Central Anatolia
After the defeat of Imperial army, Abbasid forces marched unimpended. Two contingent met in Ancyra (ankara) and captured the city. Abbasid forces then marched toward their main goal, the city of Amorium.
After several days of siege, Abbasid army made a breach in the city wall and rushed to the city.
The city fell to the abbasid forces,this shock the emperor Theopilus and made him remove iconoclasm edit

843 CE - Iraq
Al Mu'tasim died and burried in Samarra. His son, Al Wathiq succeeded the Abbasid Caliphate, with the influential and experienced council of Turkish bureaucrat of Itakh, Wasif and Ashinas.

Music :
Dynamedion - When Cultures Meet (Anno 1404 Soundtrack)
Hamdi Aslan - Storm in the Steppe
   • Storm in the Steppe | Anatolian Battl...  
Aytekin Ataş - Delibaş (Mehmed Bir Cihan Fatihi)
Aytekin Ataş - Kosova Muharebesi (Mehmed Bir Cihan Fatihi)
Marcin Przybyłowicz - Path (The Witcher 3 Soundtrack)
Richard Beddow - Glory to Asaph (Total War: Warhammer 2 Soundtrack)
Richard Beddow - I Do Not Serve (Total War: Warhammer 2 Soundtrack)
Stuart Chatwood - The Power Plate (Prince of Persia 2008 Soundtrack)