Krupp s proposal was accepted by Nibelung-werk who on the 13 May 1941 placed a urgent order.
The most important meeting which influenced the development of Heavy Panzer was with Hitler on the 26th May 1941. After looking at the plans etc Hitler said the development of both designs be speeded up so six of each would be ready from Dr Porsche and Henschel by the summer of 1942. They wanted the frontal Armour
to be 100mm thick 60mm was for the side Armour. An 8.8 cm KwK was to used for the Porsche design.to be upgraded to the same as a 8.8 cm flak 41