How does a HESH anti-tank round work? (High Explosive Squash Head)

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The HESH anti-tank round is primarily used by the British Army, although some other nations have used the round for demolition.

A HESH round consists of an inert nose cone, a plastic explosive core and a detonator. When the round is fired, it "pancakes" against the side of the enemy tank.

The plastic explosives are detonated and the resulting shockwave causes "scabbing" inside the tank as pieces of the tank fly off and impale crewmen. This allows a HESH round to destroy a tank without ever physically penetrating the vehicle.

But why is the HESH round primarily a British weapon?

The Challenger tank uses a rifled barrel, which impedes APFDS kinetic penetrators from reaching maximum velocity, but it also has a two-part ammunition storage system. The warheads are stored separately from the propellent for safety.

This makes the bags too small to make APFDS rounds effective at maximum range. So the HESH round is an excellent choice for the British Army due to their chosen type of vehicle and gun.

References:
British Armor in Desert Storm
Lieutenant Colonel David Eshel
Armor Magazine, July/August 1992
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Actually, our primary choice of ammunition is dry wit & sarcasm.

Keep up the great videos old chap! 🇬🇧

northernfire
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"penetration isn't necessary"

Not the first time I've been told that.

RubyDoobieScoo
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HESH isn't anti-tank, it's anti-fucking-everything

magoshighlands
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Can we appreciate how this guy makes detailed, informative animations with the equivalent of Microsoft paint?

Jstvdeos
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5100m???! Imagine being over 5km away and getting smoked out of no where. Fuckin scary

mojoe
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Not one challenger was lost in iraq
Even though one had taken 9 rpg hits... Gotta love Chobham armour.

caractacusbrittania
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A proud American that does a video on a British topic in a respectful and friendly manner while being supportively patriotic 🇬🇧 good to see and highlights the special relationship we have. Thank you!

ProfessorDextive
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"We aint on that hesh, dawg. We on that *BESH* "

kobieharrison
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It also suits British tank doctrine which is infantry support, with anti armour as a secondary role.

andrewtadd
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Union Flag in the background is upside down. Historically a distress signal, hope you're OK.

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“Nah we on that 🅱️ESH SHEET” -Russian badger.

julianrivera
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Well, you see, you in War Thunder, we call it 🅱️esh when it's from either an FV 4005 or the Centurion Mk V AVRE

spectrumboy
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No milk and sugar in your tea? Shocking! Great channel btw, keep it up!

pete
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While I’ve never heard someone in my country say jolly good unironically, I have heard someone say “you’ve never had greggs? I should stab you for that.”

lootgoblin
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god bless the challenger. truly a badass tank. i read somewhere that the only tank to kill a challenger was another challenger.

AcornFox
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We have kinetic penetrators too (L26A1/27A1-l26A3/L27A3) this is what was used to kill the Iraqi tank in desert storm, not HESH

CadetTommy
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In fort Nelson (UK) they have thick metal plates on display where you can see the effects of different ammunitions.

josh_blocks
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This is some of my absolute favorite content on YouTube. Thank you very much for uploading consistently.

lokiprepper
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Hesh can also be used against structures with great effectiveness

FebiMaster
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Why thank you good Sir for the UK 🇬🇧patriotism, jolly good indeed!

razerblade