Simplifying his earlier proposal, Guderian suggested the design of a main combat vehicle which would be developed later into the Panzer III, and a breakthrough tank, the Panzer IV.
Simplificando a súa primeira proposta, Guderian suxeríu o deseño dun vehículo principal de combate que acabaría sendo o Panzer III, e dun carro de avance, o Panzer IV.