<P> 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 the advancing Soviet forces . </P>
what was the biggest tank in world war 2
Panzerkampfwagen VIII Maus