These blunders were truly historic. For this list, we’ll be looking at historical mistakes that have us slapping our foreheads in retrospect. Our countdown includes The Bay of Pigs Invasion, Napoléon’s Invasion of Russia, The Fourth Crusade, Japan Brings the United States Into World War II, Hitler Invades Russia, and more! If there's a historical mistake you feel we were mistaken for excluding, help us rectify things in the comments!

Watch more great history videos here:
Top 10 Worst Decisions in History:    • Top 10 Worst Decisions in History  
Top 10 MindBlowing Alternate Histories That Almost Happened:    • Top 10 MindBlowing Alternate Histori...  
Top 10 Historically Accurate Movies:    • Top 10 Historically Accurate Movies  

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