In the high summer of 1944 the Allies achieved their major victory in Normandy with the closing of the German pocket centred on Falaise. By the end of August, Paris had been liberated, and the Wehrmacht was apparently in full flight; Brussels fell to the Allies in early September. For many, the end of the war in Europe was in sight — perhaps by Christmas that year.
But Allied success brought serious logistical problems: supplies were still having to be landed on the Normandy beaches and transported forward along increasingly distant lines of communication. This difficulty also exacerbated the clash of personalities between Allied senior commanders: General George Patton, with his great offensive spirit, wanted priority given to the Third US Army in order to attack Germany through Metz and the Saar.