The Panzer II was intended to be a training tank but, with the outbreak of war, it was pressed into service in the invasions of France and Poland. With a three-man crew—driver, commander, and radio operator— the Panzer II was the most numerous tank in the German army back during its Early-War heydey. Even then, the Panzer II only got its chance for the fact that a sufficient number of Panzers III & IV had not yet been produced.