Renault submitted its initial proposal to the commission on 10 December 1936, soon after the nationalization of the military branch of the company and renaming of that factory to AMX. This did not stop Louis Renault from remaining very active on the field of military design and production though, using the remainder of his company and competing or cooperating with AMX as he saw fit. Quickly a wooden mock-up was finished of the Renault version of the Char G; the project had the factory designation Renault ACK1. The designation merely indicated the chronological order of Renault's military prototypes, and had no further meaning.