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Siege of Avaricum

However, the capital of the Bituriges, Avaricum (near modern-day Bourges), a Gallic settlement directly in Caesar's path, was spared. Due to the town's strong protests, naturally defensible terrain, and apparently strong man-made reinforcing defenses, Vercingetorix decided against razing and burning it. Leaving the town to its fate, Vercingetorix camped well outside of Avaricum and focused on conducting harassing engagements of the advancing Roman units led by Caesar and his chief lieutenant Titus Labienus. Upon reaching Avaricum, however, the Romans laid siege and eventually captured the capital.

Afterwards, in a reprisal for 25 days of hunger and of laboring over the siegeworks required to breach Avaricum's defenses, the Romans slaughtered nearly the entire population, some 40,000 people, leaving only about 800 alive.