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.
Borgward IV
During World War II, the "Wehrmacht" used three remotely operated demolition tanks: the light Goliath ("Sd.Kfz. 302/303a/303b"), the medium Springer ("Sd.Kfz. 304") and the heavy Borgward IV ("Sd.Kfz. 301"). The Borgward IV was the largest of the vehicles and the only one capable of releasing its explosives before detonating; the two smaller vehicles were destroyed when their explosive charges detonated.