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330
Emperor Constantine I Founded the Byzantine Capital
Established when Roman emperor moved the capital of Rome from Rome to Byzantium . -
532
Nika Revolt
A revolt against Emperor Justinian I that took place over the course of a week in Constantinople. -
533
General Belisarius Military Campaigns
For his efforts, Belisarius was rewarded by Justinian with the command of a land and sea expedition against the Vandal Kingdom, mounted in 533–534. The Romans had political, religious, and strategic reasons for such a campaign. -
537
Hagia Sophia Completed
Served as an Eastern Orthodox cathedral and seat of the Patriarch of Constantinople. -
Feb 8, 639
Early Islamic military campaigns into Byzantine territory.
Arab forces began to make incursions into Armenia, which had been partitioned into a Byzantine province. The region passed several times between Arabs and Byzantines. But Muslim dominion was finally established by the time the Umayyads acceded to power. -
Feb 7, 986
Emperor Basil II military conquests of Bulgaria
Basil used a respite from his conflict with the nobility to lead an army of 30,000 men into Bulgaria and besiege Sredets. -
Feb 7, 1054
Great Schism
the event that divided Chalcedonian Christianity into Western Catholicism and Eastern Orthodoxy. -
Mar 7, 1095
First Crusade
Emperor Alexios I contacts Pope Urban II for military help in the Middle East -
Feb 7, 1202
Fourth Crusade
Western European armed expedition called by Pope Innocent III, originally intended to conquer Muslim-controlled Jerusalem by an invasion through Egypt. But a sequence of events culminated in the Crusaders sacking the city of Constantinople, which is the capital of the Christian-controlled Byzantine Empire. -
May 29, 1453
Fall of Constantinople to the Ottoman Turks
s the capture of the capital of the Byzantine Empire by an invading army of the Ottoman Empire on 29 May 1453. The Ottomans were commanded by the then 21-year-old Mehmed the Conqueror, the seventh sultan of the Ottoman Empire, who defeated an army commanded by Byzantine Emperor Constantine XI Palaiologos.