The Siege of Tyre occurred in 634 when the Arab Rashidun Caliphate laid siege to the major Byzantine port city of Tyre amid the Muslim conquest of the Levant.
In 634 AD, the Caliph Umar gave command of a 1,800-strong Rashidun army in Medina to Amr ibn al-As, who led the army north to occupy Jerusalem; meanwhile, Kharija ibn Hudhafa brought the main Rashidun army in the Levant to Eilat to guard against a Byzantine counterattack from Egypt. The Rashiduns faced heavy resistance from the Roman garrison and its Persian mercenary component, ultimately outflanking the Byzantines in street combat and utlimately cornering the Byzantine cavalry and their last remaining infantry units in the plaza. The Rashidun spearmen attacked the Byzantine cavalry from the front, and they were later joined by the Rashidun cavalry right flank, which had just wiped out the Byzantine slingers before riding to the city center to attack the Byzantine rear. The Byzantine garrison was annihilated, with only 192 of them remaining in the city to be captured. Tyre's fall saw the destruction of Argyros' legion and a sizable garrison, and Amr went on to march on the Syrian city of Emesa (Homs) and take it without much resistance, dealing another blow to Byzantium.