Oh and the brits wanted to make a carrier vessel out of paper and ice.
 
Look up “Project Habakkuk”.

Germans - Massive tanks and too many other things to even count.  
USA - Bats with incendiary bombs attached to them.  
Japs - Bombs full of fleas that infect people with the Plague.  
Russians - Dogs trained to run at enemy tanks with explosives attached to them.
 
WW2 saw a LOT of strangeness.

@Drefsab  
The Western Sea Front also saw the use of makeshift shipyards in the middle of the Atlantic.
 
The largest tanks and the largest ships of many variety. It was like the Jurassic Age of modern warfare.

@SeraphimDawn  
Everyone had strange ideas. The Brits wanted to take what were basically giant wooden spools that you’d wrap wire around, and fit rockets to them so that they’d roll forward and clear mines from the beaches.  
The Russkies developed what was basically a one-man ball-tank with a single track and a machine gun. Weird.  
What wouldn’t have been so funny was the idea of a V-2 rocket tugged behind a U-Boat in a special launcher. Said V-2 was planned to be fit with a one kiloton nuclear warhead. And fired at New York. Thankfully, that never happened.

If only we had such a noble cause for creating our war machines. Alas.
 
They’re still pretty damn cool though.

@Drefsab  
Yeah, desperation makes you take ideas straight out of Looney Toons.
 
Krummlauf
 
I’ve heard the Nazis even tried to make dogs talk at that stage of war.
 
The US experimented with Bat Bombs They were just as wacky.

@SeraphimDawn  
That late in the war, it was basically down to desperation. That’s when you had all these bizarre wonder weapons planned that would have taken away materials from other, more practical projects.  
Manned suicide jet bombs! Six-engined bombers! Tanks the size of large buildings! EVEN BIGGER railroad artillery! Mile-long artillery cannons! Amphibious, tank-tracked two-man submarines! Why the fuck not!  
Those wacky Nazis.

They say Russia was the only country big enough for the DORA to be used. Everything you can imagine in a WW2 land battle was in Russia.

Completely true. Just because something never happens doesn’t mean you can’t be prepared for it.

I can’t imagine the amount off metal required to make those. And amount of fuel to run them.
 
And they drew this plan during the stage of the war where their resources were stretched to the limit.

@Drefsab  
They were probably supposed to be used as long range artillery, kinda like the Dora, but mobile.

@Deserter  
Actually it’s a single turret with two guns, but yeah…not sure what they were thinking. The Ratte and Landkreuzer would definitely be intimidating, but they would have been so big and slow that even level bombers would have had been able to take them out once they were deployed.  
Still, just seeing an armored vehicle that huge would have been a hell of a sight.

Fucking nazis and their double turret’d tanks.  
Seriously, what were planning to use those for, point defense?

MY TANK IS FIGHT!

Nothing can get passed a Tank,