10. Marcus Licinius Crassus Marcus Licinius Crassus was an influential Roman general and politician in 2nd century BC and the son of Publius Lunius Crassus Muciano. While he was enriching himself in Syria, Parthians saw him as a dangerous individual and immediately prepared for war. While weak in infantry, Parthians could count on excellent cavalry… Continue reading Top 10 Worst Leaders in Military History