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.
FCM 1A
Testing began on 20 November 1917 after six months of delays. The vehicle was the largest tank built up to that point, measuring long. The hull was extremely elongated in order to cross the trenches of the Western Front. The tank originally had a crew of 7, but the crew was reduced to 6 in December. The main armament was a shortened version of the Canon de 105 Court Schneider with a large ammunition capacity of 122 rounds.