How Bats Almost Became America’s Unlikely Aerial Weapon

The origins of warfare can be traced back to around 2700 B.C., when the neighboring kingdoms of Sumer (in present-day Iraq) and Elam (in modern-day Iran) fought over fertile land, with Sumer being the victor. Estimating the total number of wars since then is difficult due to differing definitions of “war,” with major conflict estimates ranging from 8,700 to 17,000. The true number is likely higher, given the many smaller and unreported conflicts worldwide.

One certainty is that humanity has always sought out ways to create more deadly weapons of combat. While Sumer and Elam used spears, swords, and daggers, the invention of gunpowder by the Chinese around 800 marked a turning point. Initially used for rockets and bombs, gunpowder technology led to the creation of firearms in the late 1200’s. This innovation set the stage for the development of artillery, aerial bombers, nuclear weapons, and military lasers. ( Here are 30 inventions that shaped military history .)

Throughout history, many unconventional weapons have been developed. To create a list of 15 of the most unusual weapons of war, 24/7 Tempo reviewed sources such as Britannica , Live Science , Imperial War Museums , Sandboxx , and Forgotten Weapons . While many odd weapons exist, the selected examples were chosen for their unique or unexpected characteristics, whether in design, purpose, or function.

Our list features a collection of unusual weapons, including bizarre firearms and artillery, innovative bomb delivery systems, awkward war machines, and alarmingly, live animals used in combat. While the majority of these peculiar weapons come from the U.S. and U.K. six other countries, including Ancient Greece, also contribute to the collection.

Here are the most unusual and bizarre military weapons of all time:

Anti-tank dogs

Source: Public Domain / Wikimedia Commons

• Origin: Soviet Union
• Developed: 1941-1943

Dogs have been used in warfare since ancient times for various roles such as carrying messages, sounding alarms, tracking enemies, and even engaging in attacks. In 1930, the Soviets began training dogs for a different tactic: carrying explosives to be detonated remotely upon reaching their targets. These “anti-tank dogs” were first used in significant numbers in 1941 against German tanks. However, their effectiveness was limited, as they had been trained on stationary vehicles and were hesitant to confront moving tanks. By 1943, their use had mostly been discontinued, though reports suggest that anti-tank dogs were still being trained under the Russian Federation as late as 1996.

Exploding rats

Source: Public Domain / Wikimedia Commons

• Origin: United Kingdom
• Developed: 1941

Documents discovered in 1996 revealed that a covert U.K. government organization called the Special Operations Executive developed a wide array of deadly James Bond-style gadgets during WWII. One of their weirder inventions was the exploding rat. Real rats were collected (by an SOE officer pretending to need them for lab experiments), killed, skinned, filled with plastic explosives, and sewn up. The idea was that infiltrators would distribute the rats near boilers in industrial facilities, where workers would spot them and toss them into the fire – blowing the place up. The scheme failed, but had an unintended consequence: The Germans intercepted a shipment of prepared rats before they could be used, and the discovery unnerved them so much that they expended valuable resources on hunting for similar rats they feared might already have been distributed.

Curved-barrel rifle

G3 and StG44 ( CC BY-SA 2.0 DEED ) by Joe Loong

• Origin: Germany
• Developed: 1944

The Krummlauf (“crooked run”) was a German attachment for the STG 44 assault rifle designed to allow soldiers to fire around corners using a periscope-like sight. The Krummlauf came with barrels bent at 30, 45, 60, and 90 degrees, though only the 30-degree version saw any significant production. Unfortunately, the Krummlauf-equipped rifles were largely ineffective. The pressure inside the curved barrel caused it to wear out after just a few hundred rounds, and bullets often shattered when they rounded the curve. Ultimately, the Krummlauf proved to be a costly and impractical endeavor for the Germans.

Robot dog

Source: Public Domain / Wikimedia Commons

• Origin: U.S.A.
• Developed: 2005

A canine-looking military robot called BigDog was developed by America’s Defense Advanced Research Projects Agency (which also came up with the ARPANET, the precursor of the internet). It wasn’t a weapon strictly speaking but was meant to function as an automated pack animal, able to traverse uneven terrain while carrying weapons and other materiel. The problem was that it was powered by an internal combustion engine, which was judged to make too much noise for battlefield use, and BigDob was discontinued.

Bat bombs

Source: Public Domain / Wikimedia Commons

• Origin: U.S.A.
• Developed: 1942

In another chilling example of using animals for destructive purposes, the U.S. developed a plan involving bats. A large bomb was designed with numerous compartments, each containing a hibernating Mexican free-tailed bat equipped with a timed incendiary device. The bomb, released with a parachute, would open mid-air to release the bats, which were expected to find shelter in nearby buildings where they would ignite at a preset time. This method could have been particularly devastating in Japan, where many structures were made of wood and paper. However, after a test accidentally ignited an army airfield in New Mexico, the project was taken over by the Navy but was eventually canceled due to delays in its development.

Hallucinogenic artillery shells

Canadair… ( CC BY 3.0 ) by RuthAS

• Origin: U.S.A.
• Developed: 1950s

Extensive secret U.S. studies of the possible effects on soldiers in the field of various drugs, including LSD, began in the mid-1950s at the Edgewood Arsenal in Maryland. One result of this research was the development of softball-sized artillery shells filled with a substance called 3-Quinuclidinyl benzilate – BZ for short – an odorless powder known to cause delirium and hallucinations. The idea was to disorient enemy soldiers so that they were incapable of fighting. The Army tested the shells, but their effects proved to be too unpredictable, and they gave up on the idea.

512-foot cannon

Iraqi supergun bolted together ( CC BY-SA 4.0 DEED ) by Geni

• Origin: Iraq
• Developed: 1988-1990

Big Babylon was a supergun developed at the behest of Saddam Hussein by a Canadian engineer named Gerald Bull. It was designed to shoot projectiles into space from which they could presumably be directed back to earth, aimed at targets in, for instance, Iran or Israel. It was impractical because it was immovable and its firing would have revealed its location to enemies. Work on the project ceased in 1990 after Bull was assassinated, perhaps by the Mossad.

Hormone weapons

Source: Simon Bruty / Hulton Archive via Getty Images

• Origin: U.S.A.
• Developed: 1994

“Make love, not war” could have been the motto for a peculiar concept developed by a U.S. Air Force research lab. The proposal involved releasing sex pheromones over enemy troops from a mid-air bomb, with the hope that it would induce sexual attraction among soldiers, leading them to seek romance rather than engage in combat. This idea, informally called the “gay bomb,” aimed to turn soldiers away from fighting. Other related concepts included dispersing substances that would cover combatants in various unpleasant odors, potentially disorienting them and making them easier to find. However, since no pheromone has ever been proven to directly influence sexual behavior, the “gay bomb” was never produced, and the other ideas didn’t fare much better.

Sticky grenades

Source: Public Domain / Wikimedia Commons

• Origin: United Kingdom
• Developed: 1940-1943

These were anti-tank explosive devices with a sticky exterior, meant to adhere them to their target vehicles. The grenades were widely used in the early years of World War II, with some success, but they didn’t stick to surfaces coated with dirt or mud – as tank exteriors tended to be – and, worse, they sometimes got attached to the clothing of the soldier who was attempting to deploy them. By 1943, they had largely fallen out of use.

Panjandrum

Source: Public Domain / Wikimedia Commons

• Origin: United Kingdom
• Developed: 1943-1944

The Panjandrum, named after a whimsical term coined by British actor and playwright Samuel Foote in the mid-18th century, looked like something out of a cartoon. It had two large, 10-foot-diameter wooden wheels with metal treads, revolving around a steel drum packed with explosives. Cordite rockets attached to the wheels’ inner rims were intended to propel the contraption into concrete fortifications, where the explosives would then create an opening wide enough for tanks to pass through. During tests, however, the rockets frequently detached and flew off unpredictably, making the entire device uncontrollable. In its final test, the Panjandrum veered dangerously towards observers, nearly hitting a photographer, before crashing, and falling apart. Consequently, the project was quickly canceled.

Heat ray

Source: Public Domain / Wikimedia Commons

• Origin: Ancient Greece
• Developed: 213-212 B.C.

It might sound like something out of “Star Wars,” but the great Sicilian-born Greek mathematician, scientist, and inventor Archimedes is said to have created a devastating heat ray by assembling a bank of mirrors that focused sunlight onto Roman ships during the Siege of Syracuse, causing them to burst into flame. Some modern scientists are skeptical, and attempts to reproduce the effect have had mixed results – though some did in fact start conflagrations on dummy ships. At the very least, historians agree, the mirrors would have blinded sailors and possibly disoriented them, giving the Greeks a tactical advantage.

Fire balloons

Source: Public Domain / Wikimedia Commons

• Origin: Japan
• Developed: 1944-1945

Developed by the Imperial Japanese Army’s research institute, these were paper balloons filled with hydrogen gas and equipped with incendiary devices. Thousands were launched from Japan’s western coast to travel via the Jet Stream towards the U.S., with even their creators estimating that only about 10% would successfully make the crossing. The intent was to ignite forest fires in heavily wooded areas, causing panic and demonstrating Japan’s military reach. However, because they were launched in winter and early spring when the forests were damp, even the few that made it across had little effect. Remains of the balloons were found in 17 states, as far east as Michigan, and in the then-territories of Alaska and Hawaii, as well as in parts of Canada and Mexico. Tragically, one fire balloon claimed American lives when a minister, his pregnant wife, and five Sunday School students encountered an unexploded balloon in the forest near Bly, Oregon. It detonated, killing them all.

Incendiary pigs

Source: t-lorien / Getty Images

• Origin: Ancient Greece, etc.
• Developed: 3rd century B.C. and later

Perhaps the cruelest of all military uses of animals were pigs coated in resin or pitch, set aflame, and sent towards the enemy. The earliest account of their use comes during the siege of Megara, in Greece, in 266 B.C. The Macedonian forces attacking the town had an army of war elephants, and the approach of the burning pigs, squealing in pain and fear, terrorized the pachyderms, some of whom trampled Macedonian soldiers to death in their panic. Other Greeks and also the Romans reportedly used the technique with success in subsequent battles.

Calcium floodlights

Limelight ( CC BY 4.0 DEED ) by Beireke1

• Origin: U.S.A.
• Developed: 1863

In a latter-day tactic reminiscent of the heat ray perhaps devised by Archimedes in ancient times, Union forces besieging the Confederate-held Fort Wagner at the mouth of Charleston Harbor repurposed calcium floodlights, also known as limelights, from their use as stage lighting. The intense beam these lights throw were focused at the fort during the night, simultaneously illuminating it for the benefit of Union artillery and temporarily blinding the Rebels.

Tsar tank

Source: Public Domain / Wikimedia Commons

• Origin: Russian Empire
• Developed: 1914-1915

This bizarre armored vehicle, built for tsarist forces in pre-revolutionary Russia, didn’t use treads like conventional tanks but instead ran on three wheels like a tricycle – the front two nearly 30 feet in diameter and the third only five feet high. Each of the larger wheels was powered by a Maybach engine taken from a captured German plane. Development of the tank halted in 1915 when it became stuck in soft ground during a test, and not even its powerful engines could free it. Two of the tank’s creators were determined to fit it with a more powerful engine and continued to work on it even after the project was canceled. They never managed to free it, and after the Russian Revolution of 1917, it was forgotten and left to rust until 1923 when it was taken apart and sold for scrap.

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