The Longest Siege In Military History

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The Longest Siege In Military History

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The current Russian invasion of Ukraine has involved several brutal sieges of cities and towns alike. Many civilians have been killed along with members of the military. The most widely followed of these was the Mariupol steel plant. A small number of Ukrainian soldiers held off a much larger Russian military force.

In American history, a siege was a major turning point in the Civil War and one of the war’s most famous battles. The siege of Vicksburg lasted from May 18 to Jul 4, 1863, when Union General Ulysses S. Grant claimed it and blocked the Confederate use of the Mississippi River. The victory split the Confederacy in half, geographically. When Lincoln learned of the victory, he commented “Thank God, The Father of Waters again goes unvexed to the sea.”

Although Vicksburg was important, it was a short siege based on military history. To determine the longest siege in history, 24/7 Wall St. reviewed data from Tony Jaques’ 2006 military encyclopedia “Dictionary of Battles and Sieges: A Guide to 8,500 Battles from Antiquity through the Twenty-first Century” and other sources. Because siege lengths can be inconsistent across sources, we tried to use the same source where possible.

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A siege is a military blockade of a city or fortified place to compel it to surrender. Many times, the place under siege, such as Ceuta in North Africa or Candia in Crete, is a strategically important city. Implied in a siege strategy is that the stronghold is too well protected for a direct assault. In almost all cases, the defenders are vastly outnumbered but they are able to hold out because of strong fortifications.

Some besieging armies may know this ahead of time and dig trenches or even plant crops in the area around the fortress to prepare for a long stay. Insurgents such as the Romans in their war with the Etruscans tunneled underneath the Etruscan city of Veii to break the stalemate. In the later stages of medieval times, the introduction of gunpowder and cannon were crucial to ending sieges by battering thick walls of forts.

The longest siege in history was the Siege of Ceuta. Here are the details:
> Length of siege: 33 years
> Dates: 1694 to 1727

Ceuta, on the North African coast is a Spanish enclave today. It has been fought over many times because of its strategic position on the Mediterranean Sea and the Atlantic Ocean. It was the object of what became known as the Thirty-Year Siege in the late 17th and early 18th centuries. The siege occurred when Moroccan Moors fought with the Spanish.

The first military blockade on Ceuta began in October 1694. The Moors were ready for a prolonged siege. They constructed siege weapons and planted crops in the surrounding lands. Parts of the city switched possession over the next 30 years. In 1720, 16,000 soldiers under the leadership of the Marquis of Lede, a Belgian serving the Spanish crown, arrived and drove off Moroccan forces. Lede did not pursue the Moors because of an outbreak of plague. The Moroccans returned and conquered Ceuta.

Click here to read The 15 Longest Sieges in Military History

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Photo of Douglas A. McIntyre
About the Author Douglas A. McIntyre →

Douglas A. McIntyre is the co-founder, chief executive officer and editor in chief of 24/7 Wall St. and 24/7 Tempo. He has held these jobs since 2006.

McIntyre has written thousands of articles for 24/7 Wall St. He is an expert on corporate finance, the automotive industry, media companies and international finance. He has edited articles on national demographics, sports, personal income and travel.

His work has been quoted or mentioned in The New York Times, The Wall Street Journal, Los Angeles Times, The Washington Post, NBC News, Time, The New Yorker, HuffPost USA Today, Business Insider, Yahoo, AOL, MarketWatch, The Atlantic, Bloomberg, New York Post, Chicago Tribune, Forbes, The Guardian and many other major publications. McIntyre has been a guest on CNBC, the BBC and television and radio stations across the country.

A magna cum laude graduate of Harvard College, McIntyre also was president of The Harvard Advocate. Founded in 1866, the Advocate is the oldest college publication in the United States.

TheStreet.com, Comps.com and Edgar Online are some of the public companies for which McIntyre served on the board of directors. He was a Vicinity Corporation board member when the company was sold to Microsoft in 2002. He served on the audit committees of some of these companies.

McIntyre has been the CEO of FutureSource, a provider of trading terminals and news to commodities and futures traders. He was president of Switchboard, the online phone directory company. He served as chairman and CEO of On2 Technologies, the video compression company that provided video compression software for Adobe’s Flash. Google bought On2 in 2009.

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