One of the few advantages held by the German forces in November 1944 was that they were no longer defending all of Western Europe. Their front lines in the west had been shortened and were much closer to the German borders. This reduced their supply problems despite Allied control of the air. Their telephone and telegraph network meant that radios were no longer necessary for communications, which lessened the effectiveness of Allied Ultra code breaking. Nevertheless, some 40—50 coded messages were sent per day by ULTRA. They recorded the quadrupling of German fighter forces and noticed that an attack was planned. ULTRA also picked up information about a lot of rail and road movements in the region.