War is intricately connected to the environment where service members operate. Factors such as weather, terrain, landmarks, and ecology largely affect combat operations, especially in unfamiliar areas. For American troops stationed in Vietnam, these environmental obstacles were particularly fierce. They were immersed in dense jungles fraught with dangers, from Viet Cong ambushes to venomous creatures.
Beyond the risks from dangerous animals and thick vegetation, simply moving through the jungle brought health hazards. Persistent swarms of mosquitoes, many carrying malaria, were ever-present, and the wet, rough terrain often led to serious foot problems. Contaminated drinking water also posed a danger, frequently resulting in illness and infection.
During the conflict, many US soldiers succumbed to non-combat-related causes. The following list provides a glimpse into the various hazards these servicemen faced on a daily basis.
Venomous snakes
Venomous snakes are among the most perilous inhabitants of the Vietnam jungle. According to the US National Archives, around 25-50 American soldiers fell victim to snakebites each year during the Vietnam War. While not every serpent encountered in the jungle is venomous, two particular species are commonly encountered – and meeting them is ill-advised.
The yellow-bellied bamboo pit viper earned the moniker “two stepper” from American troops, owing to its potent venom capable of incapacitating in just a couple of steps. Though the effects of its venom typically require more than two steps to prove fatal, its lethality is undeniable.
These snakes were employed as insidious tools of warfare by the Viet Cong, who would suspend them from tunnel ceilings. When a soldier ventured into a tunnel in search of explosives or hidden adversaries, a mechanism would release the snake, dropping it onto their unsuspecting head.
King cobras also featured prominently in the landscape of the war. One of the largest venomous snakes globally, it can grow up to four meters in length. Troops encountered them in the jungle, rice paddies, latrines and even coiled up on helicopter seats.
Dale Vaughn, a door gunner with the 114th Assault Helicopter Company, 1st Aviation Battalion, happened upon a juvenile cobra that he adopted as a pet. Safely nestled in a cooler beneath his cot, he christened the reptile “O,” inspired by the prominent white marking on the back of its head.
Aggressive insects
Aggressive weaver ants, nicknamed “Communist ants” by US troops because of their red hue and their apparent focus on targeting Americans, presented a major threat. A misstep in the Vietnamese jungle often triggered immediate retaliation from these colonies, which were relentless in their pursuit of revenge. Despite the Army’s attempts to control them with bug spray, the weaver ants proved resistant. Although their bites weren’t venomous, they caused intense pain.
Troops also contended with the dangerous Vietnamese centipede, which could reach up to eight inches in length. A single bite from this creature inflicted excruciating pain and had the potential to be fatal. Along with scorpions and spiders, these were among the largest insects faced by American soldiers in the Vietnam jungle.
Veit Cong tunnels
The Viet Cong not only had the upper hand in the Vietnam jungle. Their dense network of secret tunnels and booby traps were also a deadly – but common – occurrence. The tunnels date back to the conflict between the Viet Minh and France for colonial control of Vietnam, and ran for miles. They contained everything from hospitals and ammunition stores, to living quarters. Complete with food, water and a complex ventilation system, members could live within them for months at a time.
While American soldiers trudged through the jungle on foot, their enemy could easily travel through an area using the tunnels. This allowed them to avoid environmental dangers of the environment, as well as possible human threats. This complex tunnel system also gave the Viet Cong the perfect place to launch surprise attacks.
US troops were charged with demolishing these tunnels with explosives or by flooding them with gas and water. However, it was quickly realized these tactics were insufficient, as the Viet Cong had designed the tunnels to prevent flooding and serious damage. To properly wipe them out, volunteers known as “tunnel rats” explored them by hand with only a flashlight and gun. The cramped spaces were booby-trapped with grenades, gas, trap doors, flooding and even venomous snakes.
Killer plants
Navigating the thick and tangled brush of the Vietnam jungle could mean life or death for some soldiers. The hostile environment was a maze of dangerous animals, hidden assassins and plants that could maim or even kill. Heartbreak grass, or gelsemium, is an unassuming but poisonous plant that claimed many lives.
The plant contains a compound similar to strychnine and its effects can be felt almost immediately, eventually leading to death by asphyxiation. Despite its killer reputation, accidentally ingesting heartbreak grass occurs quite regularly and has been in the news over the last few years in relation to the suspicious death of a Russian whistleblower in 2012.
Stories of the “wait-a-minute” vine, or rattan plant, were also prolific among soldiers trudging through the Vietnam jungle. Tim Lickness, who arrived in Vietnam in 1968 with the 101st Airborne Division, described the vine’s ability to “grab you” and “suspend you in the air.”
Wait-a-minute vines come from a plant that grows long cable-like arms that easily hook onto and even tear skin and clothing, eventually wrapping you in an inescapable net. While these plants were only encountered off trails, many units decided to risk trudging through them to avoid trip wires, since the vines made it impossible to set traps.
Another plant known as elephant grass was so sharp, it would leave painful cuts on soldiers’ skin. The razor-sharp plant is practically impenetrable – we can only imagine the dread one would feel when a patch of elephant grass crosses their path.
Man-eating wildlife
Tigers, crocodiles and elephants – oh my! Plants and hard-to-see insects aren’t the only dangers lurking in the Vietnam jungle. Crocodiles lurk in the water, and elephants can charge unprovoked.
On December 22, 1968, a massive tiger stalked a team from the 3rd Marine Recon Battalion as they performed a routine patrol. While the team of six were waiting for a helicopter to take them back to base, bad weather meant they had to spend the night in the jungle. While two sat on guard, the other four went to sleep. That’s when the tiger attacked one of them.
PFC Roy Regan was sleeping next to the victim of the attack, and later recalled, “I jumped up and saw the tiger with his mouth around my partner. All I could think about was to get the tiger away from him. I jumped at the tiger and the cat jerked his head and jumped into a bomb crater ten meters away, still holding his prey.”
The men leapt into action and began firing their guns at the animal, who released its prey and allowed the Marine to crawl out of the crater. When the helicopter arrived in the morning, its crew found an injured comrade, the other five men and a dead tiger.
Viet Cong traps
As if the Vietnam jungle wasn’t enough for US soldiers to contend with, they also had to be on the lookout for traps laid by the Viet Cong. The aim of these was to maim, not kill, American soldiers, as it forced an entire unit to slow down while aid was applied. Not only did they cause physical injury, they also had a psychological effect, reducing morale.
Among the most notable traps deployed by the Viet Cong were Punji sticks, which were sharpened bamboo stakes that stuck out of the ground and were covered in either feces, urine or poison. This ensured that those who encountered them not only suffered a cut from their sharp points, but also an infection that kept them out of commission.
The swinging mace was also another formidable trap. Triggered by a tripwire, it was a heavy clay ball covered in spikes, which would cause serious injury to the upper portion of a soldier’s body. It was similar to the bamboo whip, a pole with spikes attached to it. When triggered, the trap could travel up to 100 MPH, inflicting a lot of pain.
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A final noteworthy trap deployed by the Viet Cong was the the rudimentary grenade-in-a-can. As its name suggests, it was made up of an active grenade placed within a can. Depending on the location, this type of trap was made up of one or two grenades, with the latter connected by a tripwire.