a congenital liar. At Munich, Hitler had solemnly sworn that his final territorial aspiration in Europe was annexation of the Sudetenland, the German-speaking part of Czechoslovakia, and that he would assure the independence of the remainder of the state.
Britain and France now guaranteed the independence of Poland, the next victim on Hitler’s list. It was a hopeless gesture, since neither country could help Poland. That country’s fate was sealed on August 23, 1939, when the Soviet Union signed a nonaggression pact with Germany— inspired not by confidence in the peaceful intentions of Hitler but by desperation. Britain and France, who feared Communism, had refused to work with the Soviet Union to block Hitler during the early years when he could have been stopped with relative ease.
Bolstered by secret provisions of the Berlin-Moscow pact, which divided eastern Europe into German and Soviet spheres of influence, Hitler launched his armies against Poland on September 1, 1939. Poland had no chance whatsoever, being half-surrounded by German or German-held territory. The Polish army was enveloped from the first day. In addition, German General Heinz Guderian had developed a spectacular panzer arm, and German tanks cut through and rolled up Polish defenses with ease and unimagined speed in the first application of
Britain and France declared war on Germany on September 3, 1939. The British took some action at sea, blockading German ports and pursuing German surface raiders, but were slow to put troops on the Continent, while France did virtually nothing on the Franco-German frontier. The fall and winter of 1939–1940 became known in the British Empire and the United States as the “phony war,” in France as the
Meanwhile, the Soviet Union took advantage of its pact with Germany to demand from Finland large cessions of territory as a buffer around the city of Leningrad (St. Petersburg) and elsewhere. The Finns refused and Soviet troops invaded on November 30, 1939. The Finns performed brilliantly in the “winter war,” but Soviet power was too great. Russians breached the main Finnish defensive line on February 11, 1940, and Finland capitulated on March 12, ceding the land Russia wanted.
The Allies—Britain and France—saw a chance to damage the German war economy by mining the territorial waters of Norway to prevent shipment of iron ore from northern Sweden during the winter through the Norwegian port of Narvik. This ore was vital to the German war effort, but could not be moved by way of the Baltic Sea in winter because the Gulf of Bothnia froze over. At the same time Hitler coveted the deep fjords of Norway as protected places to launch German surface ships, aircraft, and submarines against British supply lines. Both sides began plans early in 1940 to occupy Norway.
Hitler struck first, seizing Denmark in a swift coup de main and occupying key ports of Norway on April 9, 1940. The Allies contested the occupation of Norway and scored some successes, especially at sea. But German efforts were more ordered and decisive, and Allied forces soon withdrew, especially as the focal point of the war shifted to the Low Countries of Belgium, Holland, and Luxembourg and to France where Hitler launched his campaign in the west on May 10, 1940.
The Polish campaign should have tipped off the Allies to new uses for two elements in the German arsenal. But it did not, and they hit the Allied forces in the west like a thunderbolt. The elements were the airplane and the tank.
German generals had discovered something that the leaders of other armies had not figured out—that airplanes and tanks were not weapons but kinds of
Heinz Guderian had built the panzer arm on the teachings of two English experts, J. F. C. Fuller and Basil H. Liddell Hart, whose ideas of concentrating armor into large units had been largely ignored in their own country. The German high command was as hidebound as the British leadership on this point, and fought Guderian’s ideas. It was the enthusiasm of Hitler for tanks that gave Guderian the opening to establish the army doctrine of putting all armor into panzer divisions, instead of dividing it into small detachments parceled out to infantry divisions, as remained the practice in the French and British armies.
In addition, Guderian won acceptance of the doctrine that panzer divisions had to be made up not only of tanks but of motorized infantry, artillery, and engineers, who could move at the speed of tanks and operate alongside armor to carry out offensive operations wherever the tanks could reach.
Erwin Rommel, who would become famous for his campaigns in North Africa, produced the best one- sentence description of blitzkrieg warfare: “The art of concentrating strength at one point, forcing a breakthrough, rolling up and securing the flanks on either side, and then penetrating like lightning deep into his rear, before the enemy has had time to react.”
This was a revolutionary idea to the armies of the world. Most military leaders thought tanks should be used as they had been employed in World War I—to assist infantry in carrying out assaults
It is astonishing that Allied (and most German) generals did not see the disarming logic of Guderian’s argument. He pointed out, for example, that if one side had 2,100 tanks and dispersed them evenly across a 300 -mile front to support its infantry divisions, the tank density would be seven per mile, not enough to be decisive except in local engagements. If the other side had the same number of tanks and concentrated them at a single
Nevertheless, British and French armies persisted in spreading most of their tanks among their infantry divisions. Both remained under the delusion that battles would be fought all along a continuous line, and they could move tanks and guns to block any point where a few enemy tanks achieved a breakthrough. They did not understand the effect of massing large numbers of tanks for a decisive penetration at a single point.
The radical aircraft the Germans developed was not much to look at. It was the Junker 87B Stuka, a dive- bomber with nonretractable landing gear, an 1,100-pound bombload, and a top speed of only 240 mph. It was already obsolete in 1940, but the Stuka (short for
When German panzers broke through enemy lines, they could employ both their own organic artillery and Stukas to shatter enemy positions or assist motorized infantry in attacks. It was a new way to win tactical engagements, and the Allies had nothing to match it.
2 THE CAMPAIGN IN THE WEST: 1940