How did 10,000 Roman soldiers do against 230,000 Celtic tribesmen during the Boudican revolt?

The Boudican revolt was an armed uprising by native Celtic Britons against the Roman Empire during the Roman conquest of Britain. It took place circa AD 60–61 in the Roman province of Britain, and was led by Boudica, the Queen of the Iceni tribe. The uprising was motivated by the Romans' failure to honour an agreement they had made with Boudica's husband, Prasutagus, regarding the succession of his kingdom upon his death, and by the brutal mistreatment of Boudica and her daughters by the occupying Romans.

The Romans advanced in a wedge-shaped formation, cutting through the rebel lines in hand-to-hand combat, their cavalry on the wings. Roman archers proved ineffective. The Britons became caught in the narrow defile and could not use their long swords.

Although heavily outnumbered, the Roman army led by Gaius Suetonius Paulinus decisively defeated the allied tribes in a final battle which inflicted heavy losses on the Britons.