The Red Ball Express was the supply line that kept the Allied advance alive after D-Day. As American and Allied forces pushed rapidly across France in the summer of 1944, traditional supply systems collapsed. Railways were destroyed. Bridges were gone. Ports were damaged. Without fuel, food, ammunition, and medical supplies, victory itself was at risk. The answer was the Red Ball Express, a nonstop truck convoy system launched on August 25, 1944. Using dedicated routes and one way traffic rules, thousands of drivers moved supplies hundreds of miles inland under constant pressure. At its peak, more than 6,000 trucks and 23,000 personnel were involved. Nearly 75 percent of the drivers were African American soldiers serving in segregated units. This companion guide provides clear historical context, explains how the convoy system worked, and documents the physical and mental toll placed on the drivers. It also examines why logistics is often ignored in war stories, even when it is decisive, and how racial segregation shaped assignment, recognition, and historical memory. Designed for classrooms, educators, students, and independent readers, this guide includes background context, key themes, vocabulary, discussion questions, essay prompts, assignments, and modern parallels. It helps readers understand how large systems function under pressure and why invisible labor often determines success. The Red Ball Express is not just a story about trucks and roads. It is a story about endurance, race, recognition, and the people who kept the wheels of victory turning while history looked elsewhere.