In 1959, Colonel Remy Van Lierde, commander of the Kamina air base in the Belgian Congo, snapped this photo...
...allegedly documenting an unidentified and aggressive species of snake measuring over 50-feet (15 m) in length.
Van Lierde had been on a helicopter mission monitoring the armed resistance that would lead to the Congo Crisis in 1960...
...when from a height of 500-feet (150 m), he saw the snake emerge from a hole and attempt to strike the helicopter as it approached.
He claimed its head was 2-feet (60 cm) wide with 3-foot (90 cm) long jaws and that it had a brown/green body with a white belly.
Some believe the snake may have been a surviving relative of the extinct Titanoboa, but the specimen was never seen again...
In late 2016, marine archeologists announced they may have found the wreckage of the infamous WWI German U-boat UB-85...
...spotted in these sonar images that were taken by an unmanned Scottish Power survey ROV in the Irish Sea.
It is rumored that when UB-85 was sunk on April 30, 1918, after failing to dive, her rescued crew shared a terrifying story...
...explaining that they had been attacked during the night by a large creature while the submarine was recharging its batteries.
The monster was described by the U-boat’s captain as having "large eyes, set in a horny sort of skull"...
...and he added that "it had a small head, but with teeth that could be seen glistening in the moonlight.”
The crew is said to have fought off the creature with their sidearms, but that the encounter left the vessel badly damaged.
Stranded on the surface, UB-85 became easy prey and was destroyed in an encounter with the British patrol ship HMS Coreopsis...
Supposedly described by anthropologist Myra Shackley in her book “Still Living?” was a bizarre 1925 encounter...
...in which Soviet soldiers hunting down enemy forces in the rugged Pamir Mountains came across an unusual figure in a cave.
Believing armed rebels were hiding in the shadows, the soldiers fired into the dark until they heard an ungodly animal scream.
A hairy human-like beast came running out of the cave past them before until it collapsed and died from gunshot wounds.
The soldiers considered skinning the specimen but found it so unsettlingly human that they buried the evidence instead...
The 1914 Battle of Mons in WWI is said to have been the scene of two mysterious and unexplained sightings...
...believed by some of the soldiers stranded in no man’s land to have been signs of forces at work from heaven and hell.
Following the battle, the more inspiring tale of the “Angels of Mons” quickly spread in the British media...
...describing phantom bowmen in the sky that supposedly slowed an overwhelming German assault to allow for an organized retreat.
Far more disturbing reports of the Hound of Mons, however, seemed to have been covered up until after the war...
...when British soldiers recounted losing comrades to an enormous and deranged and wolf-like beast the prowled their trenches.
Night after night, both British and German soldiers in the area were allegedly found dead with their throats mauled.
Rumors circulating amongst the combatants suggested the Hound may have been a German hybrid animal experiment that escaped...
It is alleged that during the Iraq and Afghan Wars, American soldiers saw strange and terrifying figures on night patrols.
The forms moved swiftly and appeared gauntly human in shape, but did not register in night or thermal vision goggles.
Such sightings were initially attributed to the paranoia and stress of occupying dangerous territory in an unfamiliar land...
...yet the soldiers suspected that maybe they weren’t crazy when they began hearing locals speak of a flesh-eating creature.
Villagers described being hunted by a humanoid similar to either a vampire or the ghoul-like jinn from Islamic mythology.
Reports became so common that it is believed the military began keeping psy-ops records on disappearances linked to the creature...