Panzer VIII Maus
Hanya ada dua purwarupa dari Maus (satu dengan Meriam dan yang satunya tidak memiliki meriam) yang menjalani ujicoba pada akhir 1944. Maus yang berhasil diselesaikan memiliki panjang 10.2 meter (30 ft 6 in), Lebar 3.71 meter (12 ft 2 in) dan tinggi 3.63 meter (11.9 ft). dengan berat 188 metrik ton, Persenjataan utama maus adalah meriam 128 mm KwK 44 L/55 yang didesain oleh Krupp dari Artileri anti-tank 12.8 cm Pak 44 yang digunakan pada tank Jagdtiger. Dengan jarak tembak lebih dari 3,500 meter (2.2 mi) meriam 128 mm Maus cukup kuat untuk menghancurkan semua jenis kendaraan lapis baja milik sekutu saat itu.
Panzer VIII Maus
On 1 May a wooden model of the "Maus", a tank project of Porsche and Krupp, was shown to Hitler. It was intended to mount a 150 mm gun. The total weight of the tank was supposed to reach 175 tons. It should be considered that after the design changes on Hitler's instructions the tank will weigh 200 tons. The model didn't have a single machine gun for close combat, and for this reason I had to reject it. It had the same design flaw that made the Elefant unsuitable for close combat. In the end, the tank will inevitably have to wage a close combat since it operates in cooperation with the infantry. An intense debate started, and except for me, all of the present found the "Maus" magnificent. It was promising to be exactly that, a "giant".[1]