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History - The earliest ancestor of the E-100 was the Tiger-Maus. It was supposed to be a simplified Maus. The Tiger-Maus was never built, but it was to use components from the Tiger I Ausf. H and the turret from the Maus.

The E-100 was to be a superheavy combat tank designed to be the replacement for the prototype-only, Porsche-designed Maus. Development and building of a prototype E-100 started in 1944 but was largely abandoned after Adolf Hitler ordered an end to the development of the Maus.

Only the chassis was finished. It was taken to the United Kingdom for evaluation purposes and eventually scrapped.

During early development the Maus turret was used on the E-100, but later a modified Maus II turret was proposed to have been used. It would have housed 128 mm KwK 44 L/55 (75 rounds) and a 7.5 cm KwK 37 L/24 [4].

Armor: Upper Glacis: 200mm angled at 60° Lower Glacis: 150mm angled at 50° Sides: 120mm Rear: 150mm angled at 30° Hull Roof: 40mm Turret Front: 200mm angled at 30° Turret Sides: 80mm angled at 29° Turret Rear: 150mm angled at 15° Turret Roof: 40mm

According to Panzer Tracts 6-3, there was a proposal for the 15 cm KwK 44 L/38 to be mounted on the E-100 as well.

Activation Group - (6) block.turret, (7) launch Smoke Granate.