Posted on 07/13/2005 10:29:25 PM PDT by SAMWolf
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![]() are acknowledged, affirmed and commemorated.
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Misunderstood Allied Secret Weapon The importance of decrypted German radio transmissions to Allied victory is well documented. Almost forgotten, however, is the fact that Ultra intelligence was sometimes squandered. ![]() The breaking of the high-level German codes began with the efforts of the Polish secret service in the interwar period. By creating a copy of the basic German enciphering machine, the Poles managed to read German signal traffic throughout the 1930s with varying degrees of success. However, shortly before the Munich conference in September 1938, the Germans made alterations to their enciphering machinethe so-called Enigma machineand in mid-September, darkness closed over German message traffic. The Poles continued their work, however, and after France and Britain's guarantee of Polish independence in March 1939, they passed along to the British what they had thus far achieved. Considerable cooperation had also existed earlier between the Poles and the French. Building on what they had learned from their Continental allies, British cryptanalysts finally cracked some of the German codes in April 1940, just before the great offensive against France and the Low Countries. Other successes soon followed and gave Allied intelligence officers and commanders valuable insights into German intentions and capabilities. Nevertheless, the British were only able to break a small proportion of the specific codes used by the Wehrmacht. At the end of 1943, the Kriegsmarine, for example, used up to forty different ciphers, all requiring different Enigma machine settings. During the Battle of the Atlantic, the transmissions from U-boats to shore and from the commander of submarines to his boats received the highest priorities from cryptanalysts at Bletchley Park, the location of the British decoding efforts in Europe. ![]() Even with the exceptional resources available there and at that time, it took experts several days and in some cases up to a week to find solutions for a particular day's settings on the Enigma machine. The task of getting invaluable intelligence information out to the field where it could be of direct help was, of course, immensely difficult, especially given fears that if the Germans found out that their codes were being compromised on a daily basis, Ultra intelligence would dry up. In 1940 during the Battle of Britain, this need for concealment was not great, but as the war spread throughout Europe and the Mediterranean, it became an increasing problem. Accordingly, the British and their American allies evolved a carefully segregated intelligence system that limited the flow of Ultra to a select number of senior officers. The Ultra information dissemination process lay outside normal intelligence channels. For example, the intelligence officers of the Eighth Air Force would not be aware of the existence of Ultra and would therefore not know the duties of the Ultra liaison officers. Those officers, in turn, would forward Ultra intelligence only to the commanders of the Eighth and Ninth Air Forces. The system seems to have worked, for the Germans never caught on to how extensively their ciphers had been compromised. ![]() Unfortunately, there were drawbacks. Intelligence is used only if it reaches those who understand its significance. Three specific incidents underline this point with great clarity. The first occurred in early September 1944, as Allied armies pursued the beaten Wehrmacht to the Third Reich's frontiers. On September 5, Bletchley Park made the following decryption available to Allied commanders in Western Europe: For rest and refit of panzer formations, Heeresgruppe Baker [Army Group B] ordered afternoon fourth [September 4] to remain in operation with battleworthy elements: two panzer, one-six panzer [Second, Sixteenth Panzer Divisions], nine SS and one nought [Ninth, Tenth] SS panzer divisions, elements not operating to be transferred by AOK [controlling army] five for rest and refit in area Venloo-Arnhem-Hertogenbosch. This intelligence, along with a second confirmation on September 6, indicated that at the very time when the British-planned Operation Market-Garden was moving forward, some of Germany's best panzer divisions would be refitting in the town selected as the goal of the British First Airborne Division and the operation's final objective on the RhineArnhem. Putting this message together with intelligence that soon emerged from the Dutch underground in Holland that SS panzer units were refitting in the neighborhood of Arnhem, Allied commanders should have recognized that Operation Market-Garden had little prospect of success. Unfortunately, they did not put these pieces together, and officers at the highest level at Field Marshal Sir Bernard L. Montgomery's headquarters who had access to Ultra also failed to draw the correct conclusions. ![]() A second example comes from a period three months after Operation Market-Garden, in December 1944. An unfortunate result of the rush to publish after the existence of Ultra became known to the public in the early 1970s has been the appearance of a number of legends. One of the most persistent is the belief that Ultra gave no advance warning to Allied commanders in December 1944 that the Germans were about to launch a major thrust through the Ardennes. Admittedly, Hitler's intuition suggested to him that German security had been compromised and led him to undertake a series of unprecedented measures to veil the Ardennes attack. Still, there were overt indications even in the high-level codes about German operational intentions. Ultra, however, pointed to a number of other indicators. These suggested that the Wehrmacht was moving supplies of ammunition and fuel into the region behind the Ardennes. Since the Germans were desperately low on such materiel, the allocations of resources could only portend major operations to come in the Ardennes. The German high command had no reason to expect that the Allies were planning to launch a major offensive in this area, especially since they were so obviously trying to kick in the door to the Reich at so many other points. Unfortunately, the mood in the higher Allied headquarters and in intelligence circles was euphoricthe war was almost over, and the Germans could not possibly launch an offensive. The third case of Ultra information not being used occurred during the Battle of the Atlantic. By 1943 the Allies were using Ultra, when available, in moving their convoys across the North Atlantic, so that the great formations of merchant shipping could avoid submarine patrol lines. In one particular case, decodings had picked up a heavy concentration of German submarines north of the Azores. Thus, a major convoy of aviation fuel tankers from the refineries at Trinidad to the Mediterranean was rerouted to the south of the Azores. Unfortunately, because his escorts needed refueling and the weather was better north of those islands, the convoy commander disregarded his instructions, sailed north of the Azores, and ran smack into the U-boats. Only two tankers reached port. What made the episode even more surprising was the fact that the convoy commander had just served a tour of duty in the Admiralty's convoy and routing section, where he surely must have had some awareness of the reasons for rerouting convoys. ![]() If some commanders occasionally misused Ultra intelligence, such instances were the exception rather than the rule. It is, however, difficult to assess Ultra's full impact on the conflict. At times, particularly early in the war, no matter how much Ultra informed the British of German intentions, the Wehrmacht's overwhelming superiority made successful use of the information virtually impossible. For example, decoded Enigma messages in the spring of 1941 warned the British about German intentions against the Balkan states, first Greece and thenafter the anti-German coup in Yugoslaviaagainst that country as well. Such intelligence, of course, was of extremely limited value due to the overwhelming forces that Hitler deployed in the region. On the other hand, the intercepts and decrypts in the summers of 1941 and 1942 gave the British government, and Churchill in particular, an accurate picture of Erwin Rommel's tank strength. That information indicated that the British army had considerable superiority in numbers in the North African theater against the Afrika Korps. These quantitative returns could not indicate, however, such factors as the technological superiority of German tanks and particularly the qualitative edge in doctrine and training that the Germans enjoyed. The intercepts, however, explain why Churchill kept consistent pressure on British Eighth Army commanders to attack the Afrika Korps.
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LOL. Mine too. It wouldn't do any good since encrypted messages are supposed to eventually be read by someone!
Wonderful information, thanks for putting it together and sharing it with us. :-)
Good morning sweets.
Thank you Mayor. How's the race going? Anyone drop out yet?
Good morning feather.
Cool!!!
Hey, I think I've been there. :-)
LOL. Forcing yourself to the front row, now that's discipline.
Get well soon.
WOW! I wonder If I can get in in an A-10
Forcing yourself to the front row, now that's discipline.
Well, I was raised by a fighter pilot. ;^)
Hi miss Feather
I'm in!
Howdy ma'am
Hiya Sam
Like the Flag-O-Gram today :-)
Going pretty good.. We lost 2 candidates today they couldn't get enough signatures.
My opponents haven't dropped out yet.
I already knocked out 2, 2 more to go.. : )
Well, saw one.
But he went 'sparko' before I could beat him up and take his lunch money.
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