During the initial period of the war the panzer corps predecessor, the motorised corps, were grouped into various panzer groups (Panzergruppen). Panzer groups were named (i.e. not designated with numbers) during the campaigns in Poland, France, and Greece, they were not used at all in Norway and Denmark in 1940, and numbered 1-4 during the first half year of the war against the Soviet Union. In the last case, a panzer group normally consisted of two or three motorized corps.