After the breakout from Normandy, Allied armies moved so fast that they outran their supply lines. To solve this, the 'Red Ball Express' was created—an enormous truck convoy system that operated 24/7 on one-way roads. At its peak, it utilized nearly 6,000 vehicles to deliver 12,500 tons of supplies daily, primarily fuel and ammunition, to the front lines. Approximately 75% of the drivers were African American soldiers, who worked in grueling conditions with little sleep. The operation was essential for General Patton's rapid advance across France and into Germany.