The Panzer IV had been built in 1st month or two linked to the second World War to provide the German armoured forces with a much better protected automobile maintaining a 7.5 CM cannon. It was a solution towards the limits of its predecessor the model III with a 5 CM cannon set alongside the threat of the enemys means, especially the soviet T 34s which have been made with an arm of the calibre including good armour plating. The model IV tank have already been extensively placed on all fronts throughout the second World War by the German Army. Many slowly improved variants had been produced to manage the on-going improvements with this opponents means.