The siege of Jerusalem in 70 CE was the decisive event of the First Jewish Revolt against the Roman Empire (66–73 CE). Roman forces led by Titus besieged the Jewish capital, the revolt's main stronghold. After months of fighting, they breached the defenses, destroyed the Second Temple, and razed the city, killing, enslaving, or displacing much of its population. The city's fall marked the effective end of the revolt and had far-reaching political, religious, and cultural consequences.
In winter 69/70 CE, after a succession war in Rome, Titus led at least 48,000 troops—including four legions and auxiliary forces—back into Judaea. By spring, this army had encircled Jerusalem, the population of which had surged with refugees and Passover pilgrims. Inside the city, rival factions led by John of Gischala, Simon bar Giora and Eleazar ben Simon fought each other, destroying food supplies and weakening defenses. Although the factions eventually united and mounted fierce resistance, Roman forces breached the city walls and pushed the defenders into the temple precincts.