EVB2945252: U.S. MP waves on a 'Red Ball Express' motor convoy near Alencon, France, Sept. 5, 1944. While Atlantic ports and French railroads were repaired, French highways were commandeered for military vehicles from Aug. 25, 1944 until Nov. 16, 1944. African American soldiers loaded and drove 50% of trucks of the vital supply line / Bridgeman Images