The German heavy tank destroyer Panzerjäger Tiger (P) (Sd.Kfz. 184) Ferdinand was based on the chassis of the Tiger (P) tank designed by Ferdinand Porsche. The vehicle was not accepted by army, but because 90 chassis have already been produced at the Nibelungenwerke plant, it was decided that they could be usefully developed. This is how the tank destroyer based on the Tiger (P) chassis was born.

M3 General Lee - an American medium tank from World War II era, also used by the British army. In the US, known as Lee, in the United Kingdom as Grant. M3 tank was created as a result of the need to replace the obsolete M2 tank, which did not match the WWII battlefield. The serial production began in August 1941. The M3 tank had many components from the M2 light tank, including chassis, Wright R975 EC2 star engine and the shape of the combat compartment.