The German tank crews of the Nazi Wehrmacht glue the Soviet KV-1 heavy tank paper model on the Eastern Front during the Second World War.
On the table is waiting in the wings paper model of another Soviet heavy tank – the KV-2.
At the beginning of the war the German industry was producing such visual aids – Field identification of tanks. During assembly, soldiers memorize the characteristics and the silhouette of the combat vehicles of the enemy.
The same practice was used by the British during the Battle of Britain – the German model of aircraft 1/72 scale were given to farmers who live on the coast of the English Channel and have a home phone.