From Robin Cross The Battle of Bulge 1944

By February 1945 the number of rail wagons available to Reichsbahn ( German railway system ) had fallen from 136,000 to 28,000 about 10,000 fewer than were needed to sustaim 25% of industrial production.

During the first ten months of 1944 the Army Ordnance Directorate had accepted 45,917 trucks though truck losses in the same period were 117,719.

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