The deadliest weapons of World War 2 never fired a single shot. In this video, we break down every major WW2 military barrier, the wire, concrete, steel, dirt and sharpened wood that armies used to turn open country into a killing zone. Every one of them leads to one stretch of French sand on June 6th, 1944.

You'll learn how barbed wire, patented by an Illinois farmer in 1874, may have killed more men than any gun. You'll see how a Czech hedgehog could beach a 30-ton tank, why the Siegfried Line's dragon's teeth are still sitting in European fields 80 years later, and how one gap in an anti-submarine net cost Britain the battleship HMS Royal Oak. We also explain Rommel's Asparagus, the German "Bouncing Betty" mine, and how Rommel stacked every barrier into the Normandy beach defenses of the Atlantic Wall.

In this video:

00:00 Intro - the weapons that never fired a shot

00:29 Barbed Wire

01:21 Tanglefoot

:02:13 Abatis

03:12 Chevaux-de-frise

04:10 Sandbag Wall

05:02 Anti-tank Ditch.

05:56: Road Demolition

06:54 Czech Hedgehogs

07:58 Dragon's Teeth.

08:54 Minefield

09:51 Belgian Gate.

10:53 Rommel's Asparagus

11:57 Anti-submarine Net.

12:59 Beach Obstacles.

Subscribe for more WW2 history, military technology and weapons explained. Next up: the Atlantic Wall itself, the fortress line these barriers were built to protect.

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Which barrier do you think was the most effective in WW2? Tell us in the comments!

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