GoodGuy
Posts: 1506
Joined: 5/17/2006 From: Cologne, Germany Status: offline
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Bah, first power outage in ten or 12 years in my district, right before I wanted to hit the OK button to post my reply.... grrrrr k I can't be arsed to type that whole thing again... Here's the compressed version: quote:
ORIGINAL: Jonathan Pollard I think Speer was able to get enough ball bearings from Sweden to cover the shortage. Correct. quote:
ORIGINAL: EUBanana I dunno about that - The Mosquito was known for its ruggedness... and its accuracy. Like I said, it was a versatile and actually a good high-speed asset (compared to the slow heavy bombers), but if you deploy a plane like the Mosq as tactical bomber (say as tank killer which had at least some potential to have a serious impact on German tank deployment, as I outlined before), you trade off accuracy for speed. If they would have been deployed as level night-bomber the German nightfighters would have ripped them apart, as Maestro pointed out. quote:
That said I know the Americans here love to compare American precision bombing to RAF area bombing, but in the words of Albert Speer, "In the end not one tank, plane or weapon was not delivered due to a lack of ballbearings." So all those ballbearing precision raids? No offense, but you don't know much about the effects of Allied bombings during WW2, obviously. I recommend to read the Strategic Bombing Survey, and maybe the official US Army history covering D-Day and the Battle of the Bulge, as they all detail Allied strategic and tactical bombings, with the latter giving a good picture of the effects on Germany's transport-backbone, the railroad, and on production facilities. Example: Operation Double Strike, conducted on 17th of August 1943: The operation involved a set of 2 waves, the first was supposed to hit the Messerschmitt plants in Regensburg, the second wave (which was scheduled to start 10 mins after the first wave) was supposed to hit the ballbearing plants in Schweinfurt. This short interval between those 2 waves was meant to tie the German fighters to the first wave, while the 2nd wave could proceed to the ballbearing plants halfway unharmed, since the fighters had to refuel after the attack on the first wave. In 1943, the fighter escorts (P-47 Thunderbolts) did not have a sufficient range to escort a bomber formation that far into the Reich (The P-51 deployed around December 1943 had the range to do the job, finally), so they had to leave the formation early, because they were low on fuel. The first wave was supposed to land in North Afrika, in order to avoid exposing the precious bomber group to the relatively high number of German airfields strung together along their return flight path (to England). Regensburg: Despite these difficulties, the bombers still carried out their mission, with the first formation reaching Regensburg and badly damaging the Messerschmitt plants. Among the 400 Germans who got killed were 91 apprentice boys (mechanic trainees), so the loss delayed their training program too, most likely. The plant could not produce a single plane for 3 weeks and it took the Germans until December 1943 to reach July's production figures. The Allies anticipated an outage lasting for around 9 months. The USAF lost 24 B-17 bombers, with around 200 occupants, around 50 bombers were heavily damaged, 2 bombers landed in Switzerland. Of this first wave strike force, the 100th bomber group had the highest losses, they lost 9 of 21 planes, resulting in being nicknamed the "Bloody Hundredth". Second wave on ballbearing plants in Schweinfurt: The scheduled time of departure couldn't be kept due to heavy fog at the second wave's departure airfields, resulting in a delay of 3 hours. This gave the German Luftwaffe enough time to refuel and prepare for another fight. The second wave started out with 230 B-17 bombers, only 183 bombers reached Schweinfurt. They dropped 719 500lbs bombs and 235 1000lbs bombs along with some 1000 incendiary bombs, inflicting heavy damage. The plant was either completely out of action or pretty much near that point. Albert Speer managed to compensate the (serious) impact on German armament production by shifting production to other plants, but - most notably - by importing ballbearings from Sweden and Switzerland. The second wave lost 36 bombers, 122 were damaged - 27 of those were heavily damaged. Two months later, a similar raid on Schweinfurt resulted in the loss of 77 B-17s, and in 121 planes being so heavily damaged that they could not be repaired anymore. This second raid's date had been dubbed "Black Thursday" by the USAF, later on. Conclusion: It took the Germans until autumn 1944 to get back to "pre-raid levels" (quote from the US bombing survey) regarding ballbearings production. As a result, the Germans redesigned equipment to substitute other types of bearings and they imported ballbearings. 60 B-17s lost, where 41 had been shot to pieces by German fighters, 4 lost due to accidents, 14 lost due to unknown reasons, 1 was shot down by flaks. 76 planes damaged by flak fire, 57 planes damaged by fighters, 43 planes damaged ("other reasons"). The German Luftwaffe lost 25 planes (300 fighters were involved). The USAF lost 53 (of 177) bombers during an attack on the Rumanian oil fields on 1st of August 1943. Such long-range missions didn't make sense without long-range escort-fighters. The USAF canceled all such missions until the P-51 (with external fuel tanks) was available in numbers (April or May 1944?). So, while this particular statement of Speer is correct, the bombings actually showed quite some effect, even though the Germans - to the Horror of the Allies - managed to repair or withdraw facilities in many cases. If you check out the US Strategic Bombing Survey, you'll find evidence that the bombings were less effective than the Allies thought, but the production delays (ranging from just days to 3 or 4 months) actually harmed the production of some of the weapons we're discussing here. A representative fatal blow regarding production (delays) would be the bombings of the submarine shipyards assembling the new XXI subs, for example. The attacks on the shipyards were so effective that the yards could not guarantee that the targeted production (scheduled to begin around Nov./Dec. 1943) time (of around 1 month per sub) could be adhered to. 170 subs were ordered, with an output rate of around 30 subs per month, but only 126 subs could be delivered to the Uboot-groups. Even though the XXI's sections were produced at several facilities inland, reducing the risk to loose production progress to bomber raids, bombings on railroad hubs hampered delivery to the assembly yards. Despite these difficulties, the yards completed 40 XXI in March 1945, which is quite surprising. Still, this number resembles 23,53% of the total order, which - in turn - was projected to be completed within 5 months - in 1944 ! In January 1945, the German Navy had 418 submarines (all types) at their disposal, a peak never reached before. With such an amount of subs, Dönitz would have cut Englands supply lines easily - well, earlier in the war. ALLIED attacks on fuel production and oil fields: quote:
ORIGINAL : United States Strategic Bombing Survey "The Attack on Oil" "With the reduction of German air power, oil became the priority target in the German economy. The bomber force for several months had been adequate for the task. A preliminary attack was launched on May 12, 1944, followed by another on May 28; the main blow was not struck, however, until after D-day. In the months before D-day and for a shorter period immediately following, all available air power based on England was devoted to insuring the success of the invasion. Virtually complete records of the German oil industry were taken by the Survey. In addition, major plants that were subject to attack and their records were studied in detail. The German oil supply was tight throughout the war, and was a controlling factor in military operations. The chief source of supply, and the only source for aviation gasoline, was 13 synthetic plants together with a small production from three additional ones that started operations in 1944. The major sources of products refined from crude oil were the Ploesti oil fields in Rumania and the Hungarian fields which together accounted for about a quarter of the total supply of liquid fuels in 1943. In addition, there was a small but significant Austrian and domestic production. The refineries at Ploesti were attacked, beginning with a daring and costly low-level attack in August 1943. These had only limited effects; deliveries increased until April 1944 when the attacks were resumed. The 1944 attacks, together with mining of the Danube, materially reduced Rumanian deliveries. In August 1944, Russian occupation eliminated this source of supply and dependence on the synthetic plants became even greater than before. Production from the synthetic plants declined steadily and by July 1944 every major plant had been hit. These plants were producing an average of 316,000 tons per month when the attacks began. Their production fell to 107,000 tons in June and 17,000 tons in September. Output of aviation gasoline from synthetic plants dropped from 175,000 tons in April to 30,000 tons in July and 5,000 tons in September. Production recovered somewhat in November and December, but for the rest of the war was but a fraction of pre-attack output. The Germans viewed the attacks as catastrophic. In a series of letters to Hitler, among documents seized by the Survey, the developing crisis is outlined month by month in detail. On June 30, Speer wrote: "The enemy has succeeded in increasing our losses of aviation gasoline up to 90 percent by June 22d. Only through speedy recovery of damaged plants has it been possible to regain partly some of the terrible losses." The tone of the letters that followed was similar. As in the case of ball-bearings and aircraft, the Germans took the most energetic steps to repair and reconstruct the oil plants. Another czar was appointed, this time Edmund Geilenberg, and again an overriding priority on men and materials was issued. Geilenberg used as many as 350,000 men for the repair, rebuilding, and dispersal of the bombed plants and for new underground construction. The synthetic oil plants were vast complex structures and could not be easily broken up and dispersed. The programs of dispersal and underground construction that were undertaken were incomplete when the war ended. The synthetic oil plants were brought back into partial production and in remarkably short time. But unlike the ball-bearing plants, as soon as they were brought back they were attacked again. The story of Leuna is illustrative. Leuna was the largest of the synthetic plants and protected by a highly effective smoke screen and the heaviest flak concentration in Europe. Air crews viewed a mission to Leuna as the most dangerous and difficult assignment of the air war. Leuna was hit on May 12 and put out of production. However, investigation of plant records and interrogation of Leuna's officials established that a force of several thousand men had it in partial operation in about 10 days. It was again hit on May 28 but resumed partial production on June 3 and reached 75 percent of capacity in early July. It was hit again on July 7 and again shut down but production started 2 days later and reached 53 percent of capacity on July 19. An attack on July 20 shut the plant down again but only for three days; by July 27 production was back to 35 percent of capacity. Attacks on July 28 and 29 closed the plant and further attacks on August 24, September 11, September 13, September 28 and October 7 kept it closed down. However, Leuna got started again on October 14 and although production was interrupted by a small raid on November 2, it reached 28 percent of capacity by November 20. Although there were 6 more heavy attacks in November and December (largely ineffective because of adverse weather), production was brought up to 15 percent of capacity in January and was maintained at that level until nearly the end of the war. From the first attack to the end, production at Leuna averaged 9 percent of capacity. There were 22 attacks on Leuna, 20 by the Eighth Air Force and 2 by the RAF. Due to the urgency of keeping this plant out of production, many of these missions were dispatched in difficult bombing weather. Consequently, the order of bombing accuracy on Leuna was not high as compared with other targets. To win the battle with Leuna a total of 6,552 bomber sorties were flown against the plant, 18,328 tons of bombs were dropped and an entire year was required. "Today we have finished rebuilding the plants and tomorrow the bombers will come again." (Saying attributed to German workers engaged in rebuilding synthetic oil plants.)"
< Message edited by GoodGuy -- 9/27/2009 1:48:44 PM >
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"Aw Nuts" General Anthony McAuliffe December 22nd, 1944 Bastogne --- "I've always felt that the AA (Alied Assault engine) had the potential to be [....] big." Tim Stone 8th of August, 2006
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