The Panzer II incorporated the lessons learnt from the Panzer I’s in the Spanish civil war – including a 2cm autocannon. In the first two years of the war, it was widely used while the Wehrmacht was waiting for its Panzer 3 and 4s. It saw acton everywhere the Germans went - Russia, Tunisia, France and Yugoslavia.
It was still an experimental vehice; for example the turret housed only one man, the commander, who had to track targets, fire and command the driver and radioman/loader. As such, he had too much to his hands, something that was certainly rectified on the Panzer III and upwards.
This tank was made by a lot of companies in even more versions, from the first A-model to the Ausführung L "Luchs" you can see to the left, but that was really an entirely different vehicle. A lot more funky adaptations were made to this vehicle, from Bergepanzer to Marder and a bridge layer version, for a really tiny bridge.
Large bits of Poland used to be Germany. After the First World War, Poland was reshaped by taking these bits and sticking them on to bits of Russian land. Guderian himself was from such a German region and in 1939, he went back home. On the way, he discovered that his troops were far from ready...Leutnant Felix knows what to do!