Weird History The Worst Defeats in Military History  

Aaron Edwards
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For as long as human civilization has existed, so has war. Often a deciding factor in the history of centuries to come, decisive battles are among the most crucial chapters of the human story. The most important of those chapters are the biggest losses. The worst defeats in military history shattered nations and broke empires. They signaled the end of eras and the rise of new ways of thinking. In essence, they completely reset the drawing board for humanity.

These defeats have much to teach us. Studying how a battle is lost is often more useful than analyzing how it was won. It shows how history went wrong, and how to avoid such a fate in the future. If you have upcoming plans to fight major battles, this is a list you should study closely. It may just mean the difference between life and death. 

Battle of Cannae (216 BCE)

Battle of Cannae is listed (or ranked) 1 on the list The Worst Defeats in Military History
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The Battle of Cannae was fought between the forces of Rome and Carthage, the latter led by Hannibal. Hoping for a decisive victory over Hannibal, Rome sent a massive force after the Carthaginian army. Outnumbered, Hannibal drew the Romans in with a retreating line of infantry, before flanking them with spearmen. A cavalry charge from the rear surrounded the Romans, and the army of Carthage decimated them.

The Battle of Cannae is known as the greatest defeat in Roman history, and one of the great strategic coups in warfare. As many as 70,000 Roman soldiers died in the battle.   

Battle of Marathon is listed (or ranked) 2 on the list The Worst Defeats in Military History
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When Persians, under King Darius I, invaded Greece, Athenians had little time to react. Athenian commander Militiades assembled an army as quickly as possible and positioned it so that marshes and mountains blocked Persian cavalry, robbing the enemy of a major advantage. The Greeks then charged with a thin center, using strengthened flanks to break through Persian ranks.

Though the Greek center was weak, it held just long enough for the plan to work. The bravery and endurance of the soldiers at the center, known as Marathon Men, became legendary in Greece, as did the tale of their messenger running 25 miles to relay news. This gave rise to the tradition of running marathons.  see more on Battle of Marathon

Battle of Salamis is listed (or ranked) 3 on the list The Worst Defeats in Military History
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After Persian king Xerxes I defeated the Spartans at Thermopylae, the Greeks blocked the advance of Xerxes's naval forces with a fleet less than half the size of that of the Persians. They then lured the Persians into a narrow passage, where the large Persian ships couldn't maneuver well. The Greeks destroyed enough of Xerxes's fleet to seriously compromise his invasion plans. In addition to being a monumental loss in the expansion of the Persian Empire, the Battle of Salamis was the first naval battle in recorded history.  see more on Battle of Salamis

Battle of the Teutoburg Forest (9 CE)

Battle of the Teutoburg Forest is listed (or ranked) 4 on the list The Worst Defeats in Military History
Photo: Freebase/GNU Free Documentation License

Known as one of the worst defeats in Roman history, the Battle of Teutoburg Forest was waged between the Germanic forces of nobleman Arminius and the 17th, 18th, and 19th Legions of Rome. The unsuspecting Romans were ambushed by the Germanic force, which hid amongst trees in the dense forest. The Germans surrounded the Romans, attacked, and slaughtered them.

Arminius received a Roman military education in his youth, and was able to use Roman strategy against the Legions. Publius Quinctilius Varus, commander of Rome's troops, committed suicide in the wake of the battle, which Roman historians refer to as the Varian Disaster.