Panzer VIII Maus
Panzerkampfwagen VIII Maus ("Mouse") was a German World War II super-heavy tank completed in late 1944. It is the heaviest fully enclosed armoured fighting vehicle ever built. Five were ordered, but only two hulls and one turret were completed before the testing grounds were captured by advancing Soviet military forces.
Vickers Medium Mark I
The Medium Mark I was the first tank to see "mass" production since the last of the ten Char 2C's was finished in 1921. As only about thirty of the next most produced tank, the Renault NC27, were built, the British Mediums represented most of the world tank production during the 1920s. They never fired a shot in anger and their performance in a real battle can only be speculated upon but, as the only modern tanks in existence in the decade after the First World War, they provided the British with a unique opportunity to test the many new ideas about mechanised warfare using real operational units. The knowledge thus gained would prove invaluable in the Second World War.On one Medium Mark I the engine was replaced by a Ricardo 90 hp diesel engine.