7These unsung heroes from World War II drove the trucks that supplied the American Army's in Europe. Three out of four of these men were African-American. After the Normandy campaign, a supply crisis arose, as the Allies pursued the German army across France and closer to Germany. Due to the destruction of the French rail and road network, and the fierce German defense of the French ports, a supply crisis quickly arose. The American army's outran their supplies. A solution had to be found quickly. Enter the Red Ball Express. All heroes don't wear capes. Some drive trucks.