Elefant

The SdKfz 184 Panzerjager (Tank destroyer) Elefant, originally named Ferdinand, is a German tank destroyer used widely in the  Eastern Front. The tank destroyer is famous for its nearly impenetrable armor and firepower. It has the largest kill per loss ratio (10:1) of all German tank destroyers during the war, making it one of the most effective ground vehicle in the war.

Appearance in Call of Duty
The Elefant appears in Call of Duty: United Offensive in the Trench mission where the player must use explosive to blow up three of them. The Elefant also appears in limited number in the multiplayer.