Marcus Licinius Crassus had everything a Roman could want—wealth beyond measure, political power, and a place beside Pompey and Julius Caesar in the First Triumvirate. But he lacked the one currency that truly mattered in the late Republic: military legend. So in 53 BC, Crassus took command in Syria and launched an invasion of the Parthian Empire, aiming to win a conquest worthy of Caesar’s Gaul or Pompey’s East. What he found near Carrhae (in modern Turkey) was a kind of warfare Rome wasn’t bui