Explore the groundbreaking and bizarre innovations of World War 2. This documentary dives into secret labs and battlefields, revealing the weapons that changed the face of Word War 2 forever. Discover stories behind Japan's experimental death ray, Germany's massive Gustav gun, the revolutionary M1 Bazooka, and the world's first night vision-equipped assault rifle.
From practical battlefield breakthroughs to fantastical concepts like the "Sun Gun," this is a journey into the cutting-edge technology and imagination that defined the weapons race during one of history's most pivotal conflicts.
over the course of the second world war
the need to equip each army with a
better gun than their adversary led to
one technological leap after
another at the end of World War II the
leaders of the Allied countries really
credited their success to Scientific and
technological
achievement guns developed in secret
Labs would emerge on the field of battle
at times surprising soldiers on both
sides of the
fight most people think it's the losing
nation that that resorts to the more
unorthodox weapon programs in an attempt
to kind of turn the war around in their
favor as a lastminute desperate Hail
Mary pass but the truth of the matter is
both the allies and the access pursued
some pretty unusual weapon programs
from this race of Supremacy came gun
technologies that are still in use
today but for some the pressure to outdo
each invention pushed science into the
realm of
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fantasy in
1937 Japan launched a full-scale
invasion of China
this localized War quickly escalated as
the US and her allies supported the
Chinese fears of an escalating conflict
with the US s Japan begin the
development of a weapon that would even
the playing
field the kouo death ray
things had been muddling along in North
China between the Japanese and the
Chinese forces but this time it got away
and it turned into the beginning of the
second world war in
Asia chief of Japan's Naval Air Forces
rear Admiral Isoroku Yamamoto tasked the
Japanese Naval technology Research
Institute with a bold
mission to explore fed inventor Nicola
Tesla's death ray
weapon in the 1930s Tesla was promoting
his idea for a beam of metal ions that
could be shot through the air at a
Target at
435,000
kmph a massively powerful blast of
energy 100 billion Watts concentrated
within nearly 1 100 millionth of a
square
cm but but his details on the science
behind this device were
vague Tesla envisioned basically a
particle beam that could knock enemy
aircraft out of the sky at a distance of
250
Mi he was thinking of using electricity
wirelessly
generated but the truth of the matter is
no one's ever been able to find Tesla's
research to show how this thing would
work it was just something that he liked
to talk about
the cougo research team quickly realized
Tesla's concept needed more energy than
any power station at the time could
output so they were trying to develop
better Communications also try to
develop more accurate radar get a more
accurate radar return so you had to
shorten a wavelength for that and I
thought if you could shorten a
wavelength enough would it generate
enough power to be a lethal type of
weapon Could you actually knock a plane
out of the sky or or hit a soldier who
are attacking you on the
warfront the magnetrons in radar systems
generate short microwaves when
electrical energy is run through
them this electromagnetic radiation is
harmless in small quantities as the
microwaves are too long to damage
biological
tissues but if the microwave length
could be shortened prolonged exposure
heats the body's tissues causing burning
or even
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cataracts the cougo research team
posited that to create a lethal dose of
electromagnetic radiation they would
need a new type of powerful
magnetron the Japanese hoped that it
would be a super weapon that they could
use to uh stop uh invading troops and to
knock enemy aircraft out of the sky
which became a larger issue as the war
progressed because eventually Japan lost
Air Supremacy over its own country as
the US Army aircore and US Naval forces
began to dominate the
sky in pursuit of this goal Japanese
officials invested around half a million
Us doar in
1940 approximately 10 and5 million usar
today but it would be Years yet before a
test could be
achieved by
1943 the war in the Pacific was playing
out in a series of island hopping
campaigns aimed at gaining control of
airfields and securing supply lines
as these battles raged on the cougo
research team tested their first
prototype death
ray if you can imagine like a satellite
dish with a mirror reflector and an
antenna array in the center of it this
prototype was not very powerful though
only about 1 to 2
kilow the Prototype managed to stop an
exposed combustion
engine but
their tests also revealed a significant
weakness and what they found was the
shielding of just a typical airplane
fuselage would provide enough shielding
that would negate any impact of the
death
rate so the death ray wasn't going to
bring down an airplane at any altitude
then in
1944 as us bombers began filling the
Skies over Japan the kouo research team
performed their second
test this time with a larger 80 cm
magnetron they tested it on a
rabbit at a distance of somewhere
between 100 and 1,000 ft there's
conflicting accounts of what the
distance was and it did in fact kill the
rabbit but the problem was the rabbit
had to be in the same place and not move
for 5
minutes so clearly the weapon needed
more work to be
effective fueled by some measure of
success the research team made plans for
further testing for the following year
but it would ultimately come too late
Japan surrendered to the Allies on
September 2nd
1945 would put an end to development of
the new
weapon the KGO death ray certainly from
a theoretical standpoint uh was a
practical idea however it was beyond the
capability of mid 20th century
technology and in fact we don't even
have a death rate today because there
are still a number of technical hurdles
that we haven't been able to overcome
fortunately to invent what could be an
incredibly devastating
weapon the death ray never fully
realized its deadly potential on the
battle fields of the second world
war and it wasn't the only gun
technology devised that would meet this
fate another would have a fleeting
impact on the battlefields of
Europe the successes of the German
invasion of the Soviet Union in 1941
ground to a halt as the armies of the
Third Reich reached the Crimean
Peninsula Soviet forces resisted at the
heavily fortified and strategic vital
Port City of Sylvester
Paul in response the Germans Unleashed a
new secret weapon for the first
time Thea
Gustav it is the largest artillery
weapon to ever be used in combat
at 47.3 M
long and 11.6 M
High Gustav took a crew of
1720 about 3 weeks to
assemble before even firing a
shot so one of the reasons you need a
large gun and what I mean by a large gun
is one with a large large
caliber is to get your extended range we
find that large projectiles have what we
call a high ballistic coefficient and
what that means is they have a large
amount of inertia which helps them
overcome the air
resistance at sylas Paul Gustaf proved
itself an effective offensive
weapon able to help the German Army
break through the city's def
sensors but the gigantic Siege Cannon
had not been designed with this
particular Target in
mind in 1936 during a tour of the crup
Gun Works at Essen Hitler mentioned that
he would need a new super Siege
Cannon one that could overcome the
impressive magino
line a series of heavy fortifications
that stretched across
450
km primarily along the border between
France and
Germany an obstacle that required a
weapon capable of Smashing through one
meter of
Steel 6 M of concrete or 30 m of Earth
the result was the Sha Gustav designed
to fire two types of
shells the lighter high explosive shells
weighed over 4.7 tons and could be fired
up to 46
km the heavier concrete piercing shells
weighed 7 tons
each and could be fired over a distance
of nearly 38 km
plans for the gun were drawn up in
1937 and were due to be completed by
1940 but it was difficult to
manufacture and by the time the gun was
ready to be built the German Army had
already bypassed the magino line and
conquered France
and so really as a as a weapon system it
wasn't very effective particularly
because of the cost
involved to build and operate one of
these systems cost roundabout is the
same as about 25 tiger tanks and really
the the German war machine could do a
lot more with 25 tiger tanks that it
could do with this huge Railway
gun the gusta named after the chairman
of the company that built it was not
completed until early
1942 by this time there were no more
suitable Targets in Western Europe but
following the German invasion of the
Soviet Union there were plenty on the
Eastern Front
but getting gustaff to the front lines
was a mammoth effort in and of
itself not only were five engines and 25
specially designed flatbed rail cars
needed to transport the weapon the crew
and the supplies to the deployment side
but once it arrived it took thousands of
workers 3 weeks to construct the twin
rail track that would enable the Gustaf
to reach the firing position
Gustaf arrived near sylas paol in early
March
1942 where the crew began the lengthy
process of constructing its firing
position 16 kilm away from the
city by early June almost 3 months after
Gustaf had arrived it was ready to fire
its first
shot logistically this weapon was a
nightmare to operate it was a huge
weapon that was was run out on Railways
and those railway lines were often the
Achilles heel of the weapon system
because all they did was that they
actually provided a path for the Allied
bombers to find their way to the weapons
and to drop uh bombs and to destroy
it its cumbersome design ultimately
outweighed its
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usefulness so so it very quickly fell
out of favor and was superseded by
rocketry in July
1942 the gusta had been in action for a
little over a month during which time it
fired around 48
shots the only times the gustaff was
used in Anger during the entire
War its cumbersome design ultimately
outweighed its
usefulness heavy Firepower was not only
needed against heavily fortified
positions during World War
II the rise of armored vehicles created
a new problem for
infantry they needed a powerful weapon
to overcome these moving fortresses
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in November
1942 allied forces began a campaign to
drive the access powers out of North
Africa this was Operation
Torch in an attempt to gain the upper
hand Allied infantry were armed with a
new secret weapon one that was designed
to take on the armored might of the
German
Army M1
bazooka at the beginning of World War II
the anti-tank armaments in infantry
units were mediocre at best
this was a real challenge coming into
the second world war armor was improving
it was harder it was um thicker and it
was often slanted as well which which
presents more metal to penetrate if you
slope the armor what was needed was
something explosive something high
explosive in
fact the United States Army answered
this need with the M1 bazooka
the Bazooka is a recoiless weapon system
and it uses a solid propellant charge to
propel the shape charge Warhead to the
Target now being recoiless what that
means is is that actually when the the
soldier pulls the trigger there isn't a
force that's going to push that Soldier
back and instead what we do is
uh we actually vent some of the
propellant gases out of the rear of the
of the the tube uh and so it means that
it's it's actually relatively easy to
fire the secret to the bazooka's armor
penetration capability was in the unique
design of its Warhead a process which
had begun years earlier
while German forces were successfully
cutting a path through
Europe the US Army procured a design for
a shaped charge rifle
grenade the simple yet Innovative design
featured a hollow cone-shaped tip lined
with a thin piece of
metal so this harnesses something called
the Monroe effect which is pretty comp
complicated physics but in basic terms
it's a high explosive
charge and it turns a conical liner just
a bit of sheet metal copper usually it
converts that under tremendous heat and
pressure into a jet of particles that
punch through the
armor it doesn't melt it doesn't burn
not significantly it punches through and
that means it can almost literally punch
above its weight a small bomb or I can
defeat quite a lot of
armor unlike conventional anti- armor
weapons the shaped charge design meant
it could Pierce heavy armor at
relatively low
speeds but reports of the increased
thickness of armor on German tanks meant
the 30 mm Warhead would need to double
in size
The increased size presented a new
problem the massive recoil from this
larger grenade would break the rifle
firing
it in
1942 second Lieutenant Edward G was
tasked with creating a delivery system
for the new explosive one that would
make use of another new
technology rocketry
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after attaching a small rocket motor to
the grenade he built a prototype weapon
out of a scrap metal tube and
retrofitted gun parts and the M1 bazooka
was
born really simple stuff basic
electrical circuit just a tube to hold
the um the munition the rocket itself
and to direct it On Target so the weapon
itself is much less significant than the
Warhead than the munition that flies out
of the front and does the
damage the M10 60 mm Warhead fired by
the Bazooka contained around 225 g of
pentalite explosive at an effective
range of 60 M it could break through
12.5 cm of armor
the simple design of the M1 bazooka made
it fast and cheap to manufacture and it
was rushed into production before being
Battlefield
tested when it finally made it into the
field it didn't quite live up to its
promise
when the M1 bazooka was shipped out to
infantry for the first time it was
almost as much of a surprise to the
Allies as it was to their
enemy the weapon and its ammunition were
sent to US troops without manuals or
training in how to use it or any
strategy for when to use it
the theory was very sound and the shape
charge could penetrate significant
amounts of armor and kill a
tank and then the other side of the
equation is The Human Side you have to
have the training and the experience and
the skill to land that Warhead onto the
armor at the right angle at the right
distance and with no guidance at
all and this inexperience would prove
costly demon rating the difficulties of
Keeping a Secret Weapon secret once it
hits the
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battlefield in 1943 following the
capture of a quantity of the M1 Bazookas
the Germans immediately saw the benefit
of its
design the tank Bane or Panza Shrek
would improve upon the Bazooka in almost
all
metrics it was more reliable had almost
three times the effective range and a
shaped charge Warhead that was half
again as large as the Bazookas allowing
for greater armor
penetration rushed into production the
paner Shrek began hitting the
battlefields of Europe In late
1943 it was the first of a long line of
copycats inspire ired by the M1
bazooka the Bazooka left quite an
extensive Legacy CU ever since the the
Bazooka there's been a whole range of
weapon systems that have been developed
rocket based anti-tank systems and we
absolutely still have shaped charge
Warheads that's the standard way to kill
a tank right
now the Bazooka wasn't the only gun
created in the Second World War that
would leave a long Legacy for infantry
in Wars to
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come by late
1942 Germany's invasion of the Soviet
Union had led to a series of hardfought
and bloody
battles the Germans were far out
numbered by the Soviets they needed a
new weapon that would help even the
playing
field the or
stg44 there's a very common term today
um assault rifle we hear it all the
time and that goes back to this system
um it's it's the translation in English
from the German St storm rifle or but
storm in the meaning of to storm the
castle so assault rifle that's where we
get the term
from in the early years of the
war German infantry mainly relied on
bolt action rifles like the carabina 98k
it was Dependable accurate and fired a
7.92 by 57 mm round
effectively at ranges of over 1,000
M but it was relatively expensive to
produce and too slow to fire which meant
it wasn't ideal for storming enemy
positions
German infantry squads were also using
the fully automatic MP 40 submachine
gun it fired a 9x19 MM round at a rate
of 550 rounds per
minute but this speed came at the
expense of range and
accuracy but in 1942 there's a new idea
and this is essentially to combine the
advantages of a traditional rifle range
accuracy power penetration wounding
effect with the rapid fire of Handy
automatic weapon at close
range so you can fight in trenches you
can fight in buildings you can also
fight out to 300 400 500 M why wouldn't
you do
that the stg44 is capable of firing a
7.9 2x 33 mm intermediate
round at 500 rounds per
minute it could be fired on single shot
or full automatic
modes and had a maximum effective range
of 600
M and yet it almost never came into
being at least it wouldn't have if
Hitler's orders had been followed
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the Germans were ultimately secretive
about
everything the great battle that went on
within the Nazi establishment was trying
to get Hitler to agree to things his
problem was that he wanted personal
control of everything he didn't listen
to adice
Hitler originally put a stop to
development of the STG 44s precursor
known as the mkb42
but instead Armament Minister Albert
Shar and others renamed the program as a
continuation of an existing submachine
gun and so the weapons de velopment was
Kept Secret both from the allies and
from Hitler
himself by late 1944 the gun had been
renamed the stormg
44 and production was accelerated to get
it into the hands of German
infantry Al's Gambit paid off
distribution of the
stg44 came too late to have a greater
impact on the
war but where it was used its impact was
felt in the depths of Winter the Germans
Unleashed their last major offensive on
the Western
Front a final bid to drive the Allied
Forces back that would become known as
the Battle of the
Bulge so put yourself in the boots of a
soldier at the time he's probably got an
oldfashioned like 19th century
technology-wise bolt action rifle
suddenly someone hands you a
shorter more compact early assault rifle
you're not loading rounds in the top of
the G anymore you are slapping in a
magazine of 30
rounds it's a submachine gun but with
nearly all the advantages of a
rifle despite arriving in the later
years of the war the stg44 has had a
profound effect on weapons development
since its
Inception by far the most common type of
rifle in military service service is an
assault rifle it's the perfect modern
combat rifle and the first of those was
the Strone
G the most significant Legacy is
probably the Kalashnikov the
AK-47 they didn't copy those by any
means but they created their own very
similar
equivalent and that's now the most
common type of rifle in the world by far
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now they didn't stop with the assault
rifle you might think that's enough you
know we've invented a new type of weapon
here this is going to be the future
combat rifle for the
world nope that's not enough for the
German
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engineers in June of 1944 the Soviet
Union launched operation
bagration an attack along a front of
over 1,000
kilm stretching from Estonia in the
north to Romania in the
South desperately falling back in front
of the onslaught the German Army would
suffer their largest defeats of the war
as they were driven back to the border
of
Poland eing out as much utility from the
newly arrived stg44 is possible the
Germans developed unique and in at least
one case groundbreaking attachments to
help stall the Soviet
Advance one of these was nicknamed by
the Americans the around the corner gun
a reflection of its unusual
design the other was the world's first
night vision scope
the HLF was designed to be attached to
the barrel of the
stg44 and shoot at an angle from the
line of
sight its purpose was as a weapon
against Soviet anti-tank teams armored
vehicle operators could shoot through
the Tank's pistol ports at enemies
climbing on top without having to open
the
hatch the first demonstration of the
device took place in July
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1944 this version was built with a 90°
angle which would allow the gun to be
mounted in the tank in a vertical
position the curve Barrel allowed for
troops to fire at the enemy from cover
now I use the word shoot Loosely because
very often what would happen is that the
projectile would shatter mainly because
of the huge bending stresses that would
be placed on a projectile that would be
traveling at twice the speed of sound
around a curved
radius this meant the KL was most
effective at close
range perhaps a more enduring device
created for the stg44
was Sila 1229
vampir one of the first night vision
weapon Scopes ever
used the vampir consisted of an infrared
Spotlight above an infrared receiver
scope it was powered by a battery unit
carried in a pack which had a life of
about 3 to 5
hours when you're looking at these
devices they're very large they're very
bulky they're incredibly heavy uh the
vampire set as a whole combined with the
stone rifle all comes together you're
getting on for about 20 kilos so this is
a really heavy piece of
equipment the spotlight worked by
shining a light source into a filter
that only allowed infrared light to pass
through the scope was designed to be
sensitive to infrared light which would
show anything in the spotlight field of
view all while being invisible to the
human
eye apparently there was a bit of
hesitation on the uh on the Western
Front because the West were supposedly
using the same kind of equipment and so
there was a concern about them getting
into the enemy's
hands despite any concerns over secrecy
around 310 units were sent out to troops
and the vampir was in use in 1945 on the
Eastern
front its Legacy though is not in the
effect it had on any particular battle
in World War II but rather its broader
influence as a revolutionary new type of
gun
scope while the emergence of infrared
scopes allowed infantry to reveal hidden
enemies in the dark a more bizarre
weapon was being designed for another
hidden Target
an enemy that came from
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above in early
1942 the Allies intensified bombing of
German
targets including area bombing over for
towns and
cities the goal was the destruction of
Germany's War Industries and the morale
of its
people with this increasing escalation
of the threat from the skies came a need
for greater and at times more outlandish
anti-aircraft weapons
enter the wind
cannon the concept of manipulating the
weather was not a new
one first Vortex Cannon ever constructed
was a a thin trumpet like a a narrow ice
cream cone invented in the
1890s the idea was that you'd let off a
little explosion of gas in the air and
an invisible Vortex or smoke ring if you
like come up and could disrupt
hailstones during the second world war
German weapons researchers wondered if
they could weaponize this idea and
designed two different
weapons The Vortex Cannon and the wind
cannon the German off office of
Aeronautics decided they would develop a
wind cannon to bring down
aircraft it was in the form of a a right
angled tube powered with a mixture of
air and
acetylene the wind cannon would fire a
ball of densely compressed air in the
hopes it would destabilize enemy
aircraft when demonstrated it could
crack a 2 and 1/2 CM wooden board that
was placed 200 M
away the vortex cannon on the other hand
was essentially a large mortar buried in
the
ground it shot a special projectile made
of powdered coal with an explosive core
into the
air the core would detonate dispersing
the coal and generating an artificial
vortex
similar to a small
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tornado there would be an enormous bang
an invisible Vortex would fly out
disrupts the aerodynamics of the enemy
aircraft and bring it crashing down well
it might have worked but as is always
true with Hitler it was developed too
late although early tests of the vortex
Cannon showed promise a battlefield
version was never built
a wind cannon on the other hand was
built in stutgart but it never saw
action against an enemy
Target did they test successfully did
they work all right and would they have
been useful well all of them were tested
all of them worked all of them produced
a plug of Vortex of air that ascended up
towards the clouds but they have worked
in practice I doubt it very
much the wind cannon may have been
fanciful and unproven on the
battlefield but it certainly wasn't the
most bizarre concept to pass across the
desks of Germany's weapon
scientists another would literally shoot
for the stars
in the early months of
1945 the Allies continued to push German
forces back to their own
borders as the walls closed in on the
German Reich
weapons projects being developed in
secret in a last attempt at Supremacy
had to be
abandoned perhaps the most high concept
and elaborate of these weapons was
designed to harness the very power of
the
sun the sun gun
the sun gun was the brainchild of
physicist Herman Obert one of the
fathers of modern rocketry who wrote of
the concept in the
1920s in spite of its name it's not
actually a gun it was basically a large
mirror which was designed mind to
concentrate the Rays of the sun Obert
described this mirror and the man space
station it would be mounted on in his
1929 publication ways to space
flight the idea was that the concave
shape of the mirror would focus the
sun's Rays much like a magnifying glass
into a small point if built on the scale
Obert had planned the amount of
concentrated solar energy would have
been
immense now Obert actually saw it in
1929 which of course Germany was still
the viar Republic then as means of
achieving solar energy to help the
German
position but after the Nazis came to
power of course everything suddenly
moved focus and uh oberth was asked to
design this thing as a working milit
prototype expanding on ober's original
concept Nazi scientists proposed using
modified V2 Rockets to Ferry
prefabricated mirror panels into
orbit once constructed the 3 Square kilm
concave mirror would orbit 88,200 km
above the
Earth the Sun gun would be operated by a
crew who could use rocket thrusters to
shift the mirror into any position
needed to Target their
enemies concentrating the sun's Rays
into a beam so
intense it would hypothe aesthetically
incinerate
cities but in spite of the
impracticability of the
thing particularly in
Wartime with all the demands on gas
materials and priority resources and so
on they still spent 3 million marks on
trying to develop this project
but the effort and the powerful
potential of the end product would never
be tested in
reality the gun's development was cut
short by Germany's
surrender the sun gun may have never
been but similar technologies that
harness and concentrate the sun's Rays
to generate power have found peacetime
applications
1961 uh many years later Obert came up
again and said hey this is a great idea
but this time we can use it for peaceful
energy like I originally
thought and many of the principles of
the sun gun a man space station orbiting
the Earth powered by the Sun and
resupplied by periodic missions have
survived in a peaceful
context through the international space
station that orbits 400 km above us
today from practical upgrades to
existing weapons
technology to outlandish flights of Pure
Imagination each new invention that
emerged from World War II strove for
size precision and
force the development of each of these
weapons had the same underlying
need to put the strongest fir power the
greatest advantage and the best chance
of success into the hands of those who
were on the
ground standing against a nation's
enemy and necessity that drove weapons
Engineers to make huge advances in gun
design
fabrication and use in the
field some have faded with
time but others endure to this
day each reflecting the vision and the
inventive Spirit of those who
contributed to the great technological
Leap Forward that the world made during
the War years
and it's alth
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