Thunderstorm comes from a streaky

British logistics supported the Anglo-Canadian 21st Army Group operations in the World War II Siegfried Line campaign, which ran from the end of the pursuit of the German armies from Normandy in mid-September 1944 until the end of January 1945. Operation Overlord, the Allied landings in Normandy, commenced on D-Day, 6 June 1944. German resistance was stubborn, and the British and Canadian advance much slower than planned until the German defences were finally breached in July. What followed was a far more rapid advance than anticipated. The British Second Army liberated Brussels on 3 September, but the subsequent effort to cross the Rhine with the aid of airborne forces in Operation Market Garden was unsuccessful. The Canadian First Army had the task of clearing the Channel Coast. Although the port of Antwerp had been captured virtually intact on 4 September, major operations were required to clear the German defenders from the Scheldt estuary, and it was not opened for shipping until 26 November. Antwerp had sufficient capacity to support both the British and American forces, but its use was hampered by German V-weapon attacks.