Vercingetorix's rebellion against Julius Caesar comes to a head with the siege of Alesia, resulting in a brutal standoff between two armies that lasts for weeks, during which the citizens of Alesia suffer immensely.
Estimates of the size of the Gallic army against Caesar vary greatly, ranging from over 300,000 in ancient sources to a more likely number of around 120-130,000 soldiers. However, the sheer quantity of warriors may make up for any lack of Roman advantages.
Caesar's only eyewitness account of the battle of Alesia is biased, but he accurately portrays the dangerousness of the situation. Caesar and his cavalry defeat the Gauls and turn the tide of the battle, forcing the enemy to head back uphill dejectedly.