Which WWII supply chain innovation, nicknamed the 'Red Ball Express,' was crucial for Allied forces after D-Day in 1944?

Throughout history, military success has often depended on supply chain innovations. From Alexander the Great's logistics system to modern military supply networks, the ability to equip and sustain forces in the field has been crucial. This trivia question focuses on a revolutionary supply chain development that fundamentally changed warfare in the 20th century. Test your knowledge of how military logistics shaped battlefield outcomes!

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A truck convoy system that delivered over 12,500 tons of supplies daily to advancing Allied troops
A specialized railroad network built by combat engineers to transport heavy artillery across France
An airborne supply operation that dropped provisions to troops cut off behind enemy lines
A fleet of amphibious vehicles that transported supplies across rivers with damaged bridges