In 1940, as Nazi Germany spread its wings of war, the French stood secure in the knowledge that they possessed the largest, most formidable, and best-equipped army in Europe. They also possessed a stalwart ally in Britain and the support of Holland and Belgium. But the people of those countries were all about to face a new kind of enemy, who fought a new kind of war. Expert military strategist Bevin Alexander examines the groundbreaking martial concepts developed by three brilliant generals: Erwin Rommel, Erich von Manstein, and Heinz Guderian. They introduced the concept that would become known as the Blitzkrieg, unleashing the power of tanks, grouping them into juggernauts that would slam into enemy lines, as aircraft supported them and ground forces swept in behind them.