 Complete the following phrase:  The division was first deployed into action in September 1939 during the Soviet-German invasion of Poland, as part of X Corps in the newly formed 8th Army. The division attacked through Silesia in south-west Poland, but the components of X Corps began to stretch out over a wide area. Despite Colonel General von Rundstedt warning the 8th Armys commander about the weakness, little was evidently done, as they soon encountered fierce Polish resistance along the 