American logistics in the Western Allied invasion of Germany supported the American and French operations in Northwest Europe during the Second World War from 26 January 1945 until the end of World War II in Europe on 8 May 1945.
By the end of January 1945, the American forces had recovered from the disruption to the supply system and the large losses of materiel inflicted by the German offensives in the Ardennes and Alsace. Sixty-eight ships loaded with replacement ordnance were dispatched from the United States. Casualties were harder to replace, and about 49,000 men were transferred from service units to the infantry branch. The Allied forces had to advance across the Rhineland, which was in the grip of thaws, rains and floods. They were then confronted by the Rhine, the most formidable barrier to the Allied advance since the English Channel. The river was crossed and bridged, and railways and pipelines were run across it. Most supplies were delivered by rail, and five railway bridges over the Rhine supported the final American advance into the heart of Germany.
Once across the Rhine, combat losses in terms of tanks, vehicles and equipment, and the expenditure of ammunition declined, while shortages of fuel and spare parts developed, as was to be expected in fast-moving mobile operations. The American logistics system was stretched, but came nowhere near breaking point. The railheads were pushed forward, the rehabilitation of the network keeping pace with the advance. No less than twenty-six engineer general service regiments worked on the railways, and by late April rail had supplanted motor transport and was carrying the bulk of supplies across the Rhine. By 8 May, when the war in Europe ended, railheads had been established at Stendal, Magdeburgy, Leipzig, Regensburg and Stuttgart in Germany. The Motor Transport Service organized XYZ, an express road service that moved supplies from the railheads to the forward units. Air supply also played its part in bringing the campaign to a successful conclusion, with a substantial amount of gasoline delivered by air in the final weeks.
Background
The campaign in Northwest Europe had commenced on 6 June 1944 (D-Day), with Operation Overlord, the Allied Normandy landings. By early September, the Allied forces had reached the Dutch and German borders in the north and the Moselle in the south, but the advance came to a halt due to logistical difficulties, particularly fuel shortages, and stiffening German resistance. Between September and November, the American forces in Northwest Europe were beset by severe difficulties with port discharge capacity and inland transportation infrastructure that only eased with the opening of the port of Antwerp in Belgium in November. The American forces were then engulfed by the German offensives in the Ardennes and Alsace in December 1944 and January 1945.
With the German offensives dealt with, the Supreme Allied Commander, General of the Army Dwight D. Eisenhower, planned to reach and cross the Rhine. He chose to make the main Allied effort in the north. There were tactical, operational and political reasons for this: the best crossing sites were there; a crossing in the north gave access to the North German Plain, where the terrain was best suited for mobile warfare, for which his Allied forces were particularly trained and equipped; and it had the political advantage of involving the British and Canadians. After some debate, the Combined Chiefs of Staff endorsed Eisenhower's strategy at the Malta Conference in January and February 1945.
Organization
In January 1945, there were five American armies in Northwest Europe. Lieutenant General Courtney Hodges's First and Lieutenant General William H. Simpson's Ninth Armies were serving as part of Field Marshal Sir Bernard Montgomery's British 21st Army Group. The First Army returned to Lieutenant General Omar N. Bradley's 12th Army Group on 18 January 1945, but the Ninth did not return to the 12th Army Group until 4 April. While under the operational control of the 21st Army Group, their administrative control remained with the 12th Army Group. The 12th Army Group also included Lieutenant General Leonard T. Gerow's Fifteenth Army and Lieutenant General George S. Patton Jr.'s Third Army. In the south, Lieutenant General Jacob L. Devers's 6th Army Group controlled Lieutenant General Alexander Patch's Seventh Army along with the French First Army. Devers kept his headquarters down to around 600 personnel, while Bradley's was more than twice the size, with enough officers to staff an infantry division. This was primarily due to the 12th Army Group assuming logistical responsibilities, something which ran counter to US Army doctrine.