The is a german tiger tank from world war two. It was literally a juggernaut. they tore through our tanks and were for the most part invulnerable. The big draw back was their huge fuel consumption and weight. there were many bridges they could not use and they sank like a rock in any kind of water so it was very hard for them to move freely around europe during the war. then there was the issue that when something broke towing them was a nightmare and by hand repairs were almost impossible due to the weight of the components. A testimony to their engineering is the fact that if fielded today they would still be considered a dangerous heavy tank.