Find out how fake poop helped the U.S. Army in Vietnam



Transcript

Let’s explore some of the inventions that came out of the Vietnam War...
starting with the most useful:
“The Huey”
Before the Vietnam War ended, it had already made the U.S. Army’s HU-1A, nicknamed “the Huey,” the most recognizable helicopter in the world.
Originally intended for use solely as a medical evacuation vehicle, the Huey’s frequently updated turbine engine eventually made it an aircraft of all trades, not only transporting the injured but also dropping soldiers into battle and firing machine guns and rockets.
The more than 5,000 Hueys active in Vietnam transported two million wounded soldiers over the course of the war...and brought fighters and firepower deep into enemy territory for air assault in the mountains.
Here’s where battlefield innovations get a little “out there.”
Excrement-shaped motion detectors
When the U.S. Army placed undisguised motion sensors in the jungle to track enemy movements, the sensors were inevitably found and destroyed.
To avoid detection, the Americans began disguising the sensors as animal excrement and dropping them from helicopters onto the jungle floor.
The Viet Cong and Northern Vietnamese Army wouldn’t stop to investigate animal waste, allowing the U.S. to track their movements by way of fake poop.
Finally...how did that happen?
“People sniffers”
In the U.S. Army’s efforts to detect enemy movements despite thick jungle cover, they began using General Electric’s XM2: a backpack cloud chamber that could detect ammonia, a key ingredient of human sweat.
Dubbed “people sniffers,” the XM2s didn’t just detect enemy sweat...they detected everyone’s, including the soldiers who used them.
And, when American soldiers did run into their opponents, the XM2s didn’t realize they could stop detecting sweat and continued to loudly alert their users that someone was nearby.
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