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Greek Fire: The Weapon that Protected the Byzantine Empire

Greek fire
A depiction of Greek fire by an unknown artist. Public Domain

“Greek fire” was a mysterious incendiary weapon that helped the mighty Byzantine Empire survive and ensure that it continued to exercise its sovereignty for many centuries.

Using a unique formula — which not even today’s scientists can figure out — the Greeks of Byzantium kept the enemy away from their vast lands which once spanned all of Southern Europe, North Africa and Asia Minor.

More importantly, Greek fire saved Constantinople, the seat of the Byzantine Empire, from repeated sieges by the Arabs.

Even when they captured it, the enemies of Byzantium were never able to recreate the unique chemical concoction that generated fire that was able to slice through water.

Invention of Greek fire

Greek fire — as the Crusaders called it — was also called “liquid fire,” “Roman fire,” or “sea fire.” It was not the first incendiary weapon used in battle. Yet, historically, it is significant for its power.

Greek fire was created in the seventh century, most likely the invention of Kallinikos of Heliopolis, a Jewish architect who fled from Syria to Constantinople.

It was the time when the Islamic forces of the prophet Muhammad were attacking the eastern territories of the Byzantine Empire and had taken over parts of Syria.

Concerned about an Islamic attack against Constantinople, Kallinikos experimented with a variety of materials until he discovered a mix for an incendiary weapon.

Kallinikos sent the formula to the Byzantine emperor, and authorities developed a siphon that operated somewhat like a syringe, propelling the fiery concoction toward enemy ships.

Weapon of destruction

Greek fire was mainly used to set enemy ships on fire from a safe distance. Its ability to stay lit in water for some time was its unique power. That prevented the enemy from dousing the flames during maritime battles.

It is said that the mysterious Byzantine weapon produced a loud roar and a lot of smoke, and it was so effective that the enemy was terrorized and often fled at the sight of it.

Historical records say that Greek fire stuck to whatever whatever surface it touched. Amazingly, it could only be extinguished with a mixture of vinegar, sand and old urine.

It seems that the invention of Kallinikos served its purpose: Greek fire was effective in repelling the enemy fleet, ending the First Arab Siege of Constantinople in 678 AD.

It was similarly successful during the Second Arab Siege of Constantinople (717-718 AD), again causing massive damage to the Arab navy.

The new weapon of mass destruction was so powerful indeed that the Byzantines kept its composition a guarded secret.

Only the Kallinikos family and the Byzantine emperors knew the secret formula, which was passed from generation to generation.

The formula was so well guarded that even when enemies of the empire literally got their hands on Greek fire, they could not reproduce it.

Sulfur, pine resin, quicklime and petrol were suggested as ingredients but no actual recreation of Greek fire was ever achieved.

There are historical records of Arabs using their version of Greek fire against Crusaders during the Seventh Crusade in the 13th century.

Ultimately, the secret of its lethal recipe was lost to history.

Greek fire
Hand-siphon launching Greek fire, like a modern-day flamethrower. Public Domain

Effective for centuries

The Byzantines continued to use the mysterious weapon for centuries, and not only in naval battles.

The incendiary weapon was used in several ways on sea and land as well. It was used not only to burn siege towers, but it also served as an offensive weapon against enemy fortifications.

There was a hand-held version of the weapon called the cheirosiphon, something like an ancient version of a flamethrower.

Also, the Byzantines used to fill clay jars with Greek fire so they could hurl it at the enemy, much like grenades.

Jars of Greek fire and caltrops — spiked metal devices strewn on the ground to impede chariots — that had been doused in the liquid were used as offensive weapons by Byzantine armies.

Arabs, Bulgarians, Russians and other would-be invaders experienced the power of Greek fire through the centuries, making it an influential military invention.

From the 7th century until the Fall of Constantinople on May 29, 1453 the Byzantine weapon played an important role in protecting the Greek empire.

According to some historians, it was Greek fire that had kept the Byzantine Empire protected from invaders for centuries, subsequently saving the whole of Western civilization.

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