In an effort to turn the proverbial lemon, in the form of an unsuccessful Tiger design, into lemonade, Porsche engineers, at the behest of the German army, converted the failed chassis into one of the largest and most potent tank destroyer designs of WWII. Initially fielded as the Ferdinand, the vehicles were further modified, and ultimately given a new, and apt, name: Elefant. This volume explores the combat history of both the Ferdinand and Elefant and chronicles the development of the ill-fated Porsche Tiger design.