 Complete the following phrase:  As the German army retreated during the later stages of the Second World War, many of the urban areas of what is now Poland were severely damaged as a result of military action between the retreating forces of the German Wehrmacht and advancing ones of the Soviet Red Army. Other cities were deliberately destroyed by the German forces. One of the most famous of these planned destructions was the razing of Warsaw, the capital of Poland. While extensively damaged by the failed 