9 AD – Battle of the Teutoburg Forest City: Near Kalkriese Country: Roman Empire / Germanic territories Date: September 9 AD City population: small tribal settlements Estimated global population: ~170–190 million In 9 AD, the Roman Empire believed it was close to fully controlling Germania. Roman governor Publius Quinctilius Varus marched three legions through dense forest, confident that local tribes were loyal allies. What he did not know was that a trusted guide, Arminius, was secretly planni