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.
A new base was developed around Brussels, and an advanced base area around Antwerp. It was decided to shut down the Rear Maintenance Area (RMA) in Normandy, where some 300,000 long tons (300,000 t) of supplies were still held. This included 15,000,000 rations, which were gradually eaten by the troops in the RMA. Stores still required by the 21st Army Group were moved forward to the new advanced base, and the rest returned to the War Office for disposal. To get the railway system in operation again required the reconstruction of bridges and the importation of additional locomotives. Petrol was brought in tankers and over the Operation Pluto pipeline. Civilian labour was utilised at the bases in a variety of tasks to enable military personnel to be released for service in forward areas. By the end of 1944, some 90,000 civilians were employed by the 21st Army Group, of whom half were employed in workshops in the advanced base, and 14,000 at the port of Antwerp.
British logistics in this campaign had access to enormous resources. The problem the administrative staffs faced was not whether something could be accomplished, but how soon it could be done. Procedures had already been developed and honed in earlier campaigns, and were improved upon as administrative staffs steadily became more experienced. The maintenance system had both capacity and flexibility, and was capable of supporting both fast-moving and slow-tempo operations.