Bibracte

About

Julius Caesar turned to face the pursuing Helvetii near the Aeduan capital of Bibracte and, after a long day of fighting, broke their army and forced their survivors back to their abandoned homeland in Switzerland. It was Caesar's opening battle of the Gallic Wars and set the pattern for the eight years of campaigning to follow. Roughly a quarter of the original 368,000 Helvetii migrants are said to have survived. Caesar dictated his own account of it in the Commentarii.

What happened here

A Roman army fights the way it camps: in lines, by drill, on ground chosen if possible. The legions form up in cohorts with gaps that let ranks rotate, throw a volley of heavy javelins at close range, and then close with the short sword, pushing behind the shield. Auxiliaries hold the flanks and do most of the cavalry work and most of the skirmishing. Battles are short and decided by whether one line breaks, and the killing happens in the pursuit rather than the fighting. The camp is dug and palisaded every night regardless. Afterwards the dead are stripped and the field is looted for days; the ground is remembered locally long after the campaign is a paragraph in someone's history.

In ancient writing

• Caesar, Bellum Gallicum 1.23–26

  The Helvetii turn and fight on a hillside; the baggage laager behind them holds out until nightfall.

Sources

• https://en.wikipedia.org/wiki/Battle_of_Bibracte
• https://www.historyofwar.org/articles/battles_bibracte.html