EARLY EPISODE: The Cimbrian War (Patreon)

Rome kills 80,000 of their own soldiers because of a personal beef. 

Sources:

Theodor Mommsen. The History of Rome IV "The Revolution" 

Plutarch. Life of Marius. 

Richard Evans. Rome's Cimbric Wars

Peter Tsouras. The Cimbrian War, 113-101 BC

Mike Duncan. The Storm before the Storm