Both Winston Churchhill and Franklin Roosevelt (once Roosevelt saw the immediacy of coming to the aid and support of Britain in the war against the Nazis) made a remarkable strategical and tactical mistake, a mistake which likely prolonged WWII even after the U.S. officially entered the War after the December 7, 1941 bombing of Pearl Harbor by the Japanese government.
Churchill had repeatedly been beseeched by Lord Pound of the Admiralty to provide adequate air cover for the Royal Naval escorts that plied the Atlantic together with merchant vessels bringing goods and military personnel to Britain from America and other points, including support of the Russian defense against the Nazi invasion. Nazi U Boats were sinking both military and merchant ships at a rate that caused the supply line to evaporate. British losses in the Atlantic were measurable and were not good: In the first 3 months of 1940, more than 1Millions tonnage of commodities, imports, and merchandise, not to mention people, were sent to the bottom of the Atlantic. Admiral Donitz, late in the War named by Hitler to become the second Nazi Fuhrer destined to succeed Hitler when his demise occurred, had successfully implored Hitler to increase the U Boat presence in the Atlantic relying on the successes wrought in demolishing these Allied supply lines. Donitz and Roosevelt both also knew Britain had a money problem. At the start of 1940, Britain had about 2Billion pounds left in its Treasury. This motivated Churchill to implore Roosevelt to produce war materials and give them to Britain on credit, the initial overture that resulted in Lend-Lease, an obvious creation of Wall Street lawyers and New York financial savvy.
Added to all of this was the disastrous decision not to bomb the home port for German U-Boat while its impenetrable underwater mooring site at Lorient. This homeport provided at Lorient was so well built that when the Allies finally decided to destroy it, the task was impossible even with repeated Allied bombings. After the war, it was concluded that this impenetrable underwater fortress housing U Boats undergoing maintenance and repair could easily have been destroyed had the Allied bombings occurred during construction.
Churchill's mistake, joined by Roosevelt, was that both saw the air war as the condition required to end Nazi dominion of Europe. Both Britain and the US believed domination of Germany meant the obliteration of German cities and strategic sits along the Ruhr and German ports located in the North Atlantic. The case made to the leaders resounded in the highest echelons of the American and British councils. The critical mistake, though, a mistake that Dimbleby succeeds in making, was that both Churchhill and Roosevelt saw protection of the convoys as a defensive measure while both believed bombing German strategic sites and cities was an offensive measure, and militarily, being on offense was a sign that the war was being won. What they and their war councilors failed to understand was that air protection of the sea lanes permitted the Allies to be on the offensive, since without the strategic materials required for supplying the soldiers, the nation, and production, neither nation could produce military supplies, equipment, and transport them to Europe where they were required to conduct an offense.
Britain got the benefit of an own goal, through a major military mistake made by Adolph Hitler. Gross Admiral Erich Raeder and Admiral Karl Donitz remained continually at odds, each seeking to ascend the other in the attention and affection of the Fuhrer. Raeder, against the protests to Hitler by Donitz, was able to convince Hitler that U-Boat production should be limited in favor of other naval needs, a strategic error of significant proportion early in the Atlantic naval operations. The U-Boats were successful beyond anyone's calculations but Raeder convinced Hitler that production of U-Boats should be limited to 25 per year. Had Hitler granted Donitz's requests the number of U-Boats which could be produced and put to sea quickly would have starved Britain into capitulation.
It remains a mystery to me why Churchill and Roosevelt, and the military leaders could not see this, and the sad fact is that hundreds of thousands of lives and millions of pounds of tonnage were lost until Roosevelt and Churchill recognized this vital need. Dimbleby's case is well presented, fact-based, and evaluation of military strategy sound.
The success of the U Boats and the submariners who manned them were impressive. What is impressive is that every submariner knew that the likelihood of them surviving the War was small. By the end of WWII, of the 38,000 submariners in the Nazi UBoat service, more than 30,000 of them had died at sea or in conflicts at sea by depth charge or an inability to submerge quickly. For a couple of years during the early 1940s, UBoat activity along the Atlantic seaboard from Boston to Key West sunk more than 400 vessels. U-boats were just a few offshore, and not even pleas from the White House were able to get businesses and municipalities along the Eastern seaboard to turn off their lights at night to prevent German watchers from observing activities along the shore. The U-boats were that close that the lights from amusement parks from New Jersey through Florida provided illumination permitting UBoats to successfully complete their deadly missions. Even Donitz remarked the ease with which German U-Boats plowed the eastern seaboard of the US from Atlantic City and the Florida Keys, picking off naval and merchant vessels without contest.
There also were two other occurrences that shaped the Atlantic sea battles. Early in their engagement with the Nazis, the German code machine was captured from a sunken German vessel. The well-known work of the Bletchley Park codebreakers made a significant difference early in the sea battles, but directly the Admiralty's tracking of German scores against British merchant, corvettes, battle carriers, and other ships were being met with U Boat attacks almost immediately when those vessels reached the Artic and Atlantic shipping lanes. Dimbleby lays it out for the reader so clearly that it is hard to avoid recognizing that the German codebreakers had cracked British encrypted signals giving them, if not the upper hand, at least a leveling of the significance of the Enigma find. Once the British realized that their codes had been cracked, they modified their signals, and slowly began to take a forceful hand at sea.
A third factor--perhaps the most subtle and maybe most important next to the late but ultimate decision to provide air support to the convoys--was the improvement in radar available to Allied naval and merchant ships at sea. By Spring 1943, a device known as the Metox 600 was in use giving destroyers and other battlecruisers the ability to detect U-Boat conning towers 12 miles away, giving the Allies, for the first time, the opportunity to wage war at sea as the aggressor and not simply the object of U-Boat destruction. This, more than anything else, seems to have given the Allies the superiority to reduce UBoat efficacy and the ability to destroy them. By late 1944, Admiral Donitz who governed the UBoat operations and held the submariners is the highest esteem, had begun to wonder whether the UBoats would ever be able to sink another Allied vessel or whether the German ability to manufacture UBoats at an unbelievable rate made any difference. As fast as the German U-boats and battleships slipped off the way, they were being sunk.
Because Churchill and Roosevelt finally recognized the "offensive" nature of protecting the merchant ships and convoys, US production of military goods and exports were reaching Britain in record amounts and paved the way for the June 1944 Overlord operation at D Day. With the way clear across the Atlantic and through the Arctic and Mediterranean into North Africa, supplies and military procurement were finding their ways to Russia and North Africa where Rommel's Afrika Corps was finally put down after an unparalleled and seemingly unchallenged run of successes. With the D-Day invasion in sight, the end of the War in Europe was envisioned.
Dimbleby is a BBC "presenter" as the BBC calls them and is known in Britain for his political discussions and presentations. The son of a war correspondent, Dimbleby writes with sensitivity and empathy for the brave sailors of the Allied and British naval and merchant marine services, and the submariners in the German U-Boat service. His descriptions of men clamoring in the icy waters of the Atlantic and Arctic, and the respect shown by personnel at sea for their adversaries kept me reading raptly. Having an ability to display that empathy requires an understanding well beyond the intensive research in naval archives required to write a 460 history with an additional 80 or so pages of endnotes and bibliography. The completion took me a while because I was constantly looking to the endnotes and reviewing the bibliography for clues to his research and conclusions.
I found this a remarkable history which opened for me, the son of a WWII naval intelligence operative, the door to a better understanding of war, but also the tough and sometimes miserable work men and women at sea--even when not at war--must endure securing our society. Life at sea is tough even in the best of circumstances. Life at sea during wartime is perilous, lonely, dangerous, and unpredictable at all times. Dimbleby sensitized me to this, and reading this book made me better understand a lot of things that are not always explainable.
It also illustrated what I believe to be the folly of Churchill's decision-making. Dimbleby makes the case well that Churchill was aligned with his Air Corps leadership because he believed that bombing German cities, civilians, and strategic sites would demonstrate beyond doubt the resolve of the British people to defeat Nazism on its own terms. He lost sight of the fact that when the merchant fleet and convoy escorts together with the 33,000 members of the Merchant Navy are lost at sea with their millions of tons of commodities, supplies, and foodstuffs, producing 6,000 new fighter aircraft is meaningless if the fuel is not available to fuel the bombing runs. And, because of the early U-Boat destruction, the effort was held up until good strategic sense was able to prevail.