Caesar

CHAPTER 5 · 58–44 BC · The Rise and Fall of Rome, 264 BC – AD 476

Watch Gaul turn red — all of it, in eight years. Julius Caesar arrives in 58 BC as governor with a debt-ridden reputation and four legions; he manufactures a war from a tribal migration (the Helvetii, first arrow), and then never stops: the Belgae in the north, the Atlantic tribes in the west, two demonstration crossings each into Germania and Britannia (56–54 BC — the short arrow across the Channel; conquest will wait a century, but the propaganda value of crossing the Ocean is immense). His dispatches home — the Commentaries, still the most successful campaign literature ever written — keep

The turn: The Rubicon, 10 January 49 BC.

This chapter is one scene of an interactive atlas: the map repaints as the dates advance, campaigns draw themselves, and every chapter argues its causes and consequences — then a field exam asks you to prove it on the map.